Fema Electronica B Series User manual

Series B . Models Bxx-C1
Impulse counters and ratemeters
Large format industrial meters with impulse counter, ratemeter and periodmeter funcons. Dierent
formats available with 60 mm and 100 mm digit height, 4 and 6 digits, in red or green color. Sturdy metal
housing, with full IP65 protecon, designed for panel, wall or hanging mount. Versale and congu-
rable, accepts all types of impulse signals (NPN, PNP, Namur, TTL, inducve, mechanical, encoders, ...),
provides excitaon voltage to power the transducer, congurable fast access menu, ‘on power up’ func-
on, password and 5 congurable brightness levels. Universal AC and DC power. Accepts up to 3 output
and control opons (relays, analog retransmission, Modbus RTU, transistor outputs, RS-485 ASCII, ...).
Conguraon from frontal keypad or remote keypad.
www.fema.es
Tel. [phone] inf[email protected]
INDUSTRIAL SERIES . LARGE FORMAT METERS
4328r03
User’s Manual
ELECTRONICS FOR INDUSTRIAL AUTOMATION
PANEL METERS . SIGNAL CONVERTERS . LARGE DISPLAYS

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
2
1. Series B, models Bxx-C1
Large format industrial meters with impulse counter, ratemeter and periodmeter funcons
Large format meters for long distance reading, for industrial
applicaons. Dierent formats available with 4 and 6 digits,
with 60 mm and 100 m digit height. Front keypad to access
the conguraon menu, and oponal remote keypad.
Instruments with 5 impulse counter modes (see secon
1.13.3), 2 ratemeter modes (see secon 1.13.9) and 1 peri-
odmeter mode (see secon 1.13.9).
Highly congurable, accepts all types of sensors (NPN,
PNP, push-pull, Namur, inducve, pick-up, mechanical, TTL,
CMOS, ...) including single and bidireconal encoder signals.
Reading from 999999 to -199999 (or 9999 to -1999 for 4 digit
formats) with congurable decimal point, scalable reading
with congurable mulplier (1 to 999999) and divider factors
(1 to 999999). Includes internal pull-up and pull-down resis-
tors, congurable trigger levels, detecon by rising or falling
edge, excitaon voltage congurable from 5 Vdc to 18 Vdc.
Output and control opons with 1, 2 and 3 relays, transis-
tor outputs, controls for SSR relays, isolated analog outputs,
communicaons in Modbus RTU, RS-485 ASCII and RS-232.
Sturdy metal housing with full IP65 protecon. Internal
connecons by plug-in screw clamp terminals, and output
through cable glands. Housing prepared for panel, wall and
hanging mount.
• Congurable ‘Fast access’ to selected funcons with key
‘UP’ (5) (see secon 1.13.17)
• ‘On power up’ for system protecon on ‘cold’ start-up and
control of alarm status (see secon 1.13.18)
• ‘FAST’ mode for fast counter applicaons (see secon
1.13.3)
• ‘SLOW’ mode for ratemeters applicaons at low frequen-
cies (slow applicaons) (see secon 1.13.9)
• Easy conguraon for most usual sensors at the ‘SnSr /
Auto’ menu (see secon 1.13.14)
• alarms with 1 or 2 setpoints, independent acvaon and
deacvaon delays, hysteresis, manual unlocking, ... (see
secon 1.13.15)
Mulple display lters, memory of maximum and minimum
reading, password protecon, 5 brightness levels.
1. Idenfy the instrument format (see secon 1.4)
2. Power and signal connecons
- open the instrument (see secon 1.5)
- connect the power (see secon 1.7)
- connect the signal (see secon 1.8)
- close the instrument (see secon 1.5)
3. Congure the instrument (see secon 1.13)
- select the main funcon, and the decimal point posion
(see secon 1.13.2)
- congure the main funcon selected (see secon 1.13.2)
• counter modes from secon 1.13.3
• ratemeter and periodmeter from secon 1.13.9
- congure the sensor (see secon 1.13.13)
1.1 How to use this manual
If this is the rst me you are conguring a Series B large
format meter, below are the steps to follow to install and
congure the instrument. Read all the manual secons in
order to have a full and clear view of the characteriscs of
the instrument. Do not forget to read the installaon precau-
ons at secon 1.17.
4. Advanced conguraon (oponal)
- congure the instrument alarms (see secon 1.13.15)
- congure the fast access (see secon 1.13.17), ‘on power
up’ (1.13.18), key ‘LE’ (1.13.19) and password (1.13.26)
5. If the instrument includes analog output (AO) or serial
communicaons (RTU, S4, S2)
- to include an opon to an instrument see secon 1.6
- to congure an installed opon, access the opon con-
guraon menu (see secon 1.13.30)
- see secon 2 for informaon regarding the output and
control opons available
6. Install the instrument
- mount on panel, wall or hanging (see secon 1.16)
- adjust the brightness level according to your environmen-
tal needs (see secon 1.13.29)

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
3
1. Series B, models Bxx-C1 . . . . . . . . . . . . . . . . . . 2
1.1 How to use this manual . . . . . . . . . . . . . . . . 2
1.2 How to order . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.4 Sizes and formats . . . . . . . . . . . . . . . . . . . . 4
1.4.1 Format B24. . . . . . . . . . . . . . . . . . . . . . 4
1.4.2 Format B44. . . . . . . . . . . . . . . . . . . . . . 4
1.4.3 Format B26. . . . . . . . . . . . . . . . . . . . . . 5
1.4.4 Format B46. . . . . . . . . . . . . . . . . . . . . . 5
1.5 To access the instrument . . . . . . . . . . . . . . . . 6
1.6 Modular system . . . . . . . . . . . . . . . . . . . . . 6
1.7 Power connecons and protecve earth . . . . . . . 7
1.8 Input signal connecons . . . . . . . . . . . . . . . . 7
1.9 Connecons for remote keypad . . . . . . . . . . . . 7
1.10 Technical specicaons . . . . . . . . . . . . . . . . 8
1.11 Funcons included . . . . . . . . . . . . . . . . . . 9
1.12 Messages and errors . . . . . . . . . . . . . . . . . 9
1.13 Conguraon . . . . . . . . . . . . . . . . . . . . 10
1.13.1 How to operate the menus . . . . . . . . . . . 10
1.13.2 Inial set-up . . . . . . . . . . . . . . . . . . . 11
1.13.3 Counter modes descripon . . . . . . . . . . . 12
1.13.4 Standard counter ‘cn.1’ conguraon menu . 12
1.13.5 Quadrature counter ‘cnq.2’ conguraon menu12
1.13.6 Counter + inhibion ‘cn.3’ conguraon menu 13
1.13.7 Counter + control add / subtract ‘cnc.4’ conguraon menu 13
1.13.8 Dierenal counter ‘cnd.5’ conguraon menu13
1.13.9 Ratemeter and periodmeter modes descripon14
1.13.10 Ratemeter ‘rt.6’ conguraon menu . . . . . 14
1.13.11 Quadrature ratemeter ‘rtq.7’ conguraon menu . 15
1.13.12 Periodmeter ‘Prd.8’ conguraon menu . . . 15
1.13.13 Accepted sensors and signals . . . . . . . . . 16
1.13.14 Sensor conguraon menu . . . . . . . . . . 17
1.13.15 Alarms . . . . . . . . . . . . . . . . . . . . . . 18
1.13.16 Alarms conguraon menu . . . . . . . . . . 19
1.13.17 Fast access . . . . . . . . . . . . . . . . . . . 20
1.13.18 ‘On power up’ funcon . . . . . . . . . . . . 20
1.13.19 Key ‘LE’ . . . . . . . . . . . . . . . . . . . . . 20
1.13.20 ‘Fast access’ conguraon menu . . . . . . . 21
1.13.21 ‘On power up’ conguraon menu . . . . . . 21
1.13.22 ‘Key LE’ conguraon menu . . . . . . . . . . 21
1.13.23 ‘Overrange / underrange’ funcon . . . . . . 22
1.13.24 Le zeros funcon . . . . . . . . . . . . . . . 22
1.13.25 Excitaon voltage funcon . . . . . . . . . . 22
1.13.26 ‘Password’ funcon . . . . . . . . . . . . . . 23
1.13.27 Default factory conguraon . . . . . . . . . 23
1.13.28 Firmware version . . . . . . . . . . . . . . . . 23
1.13.29 Brightness conguraon . . . . . . . . . . . . 23
1.13.30 Access to the opons conguraon menu . . 23
1.14 Full conguraon menu. . . . . . . . . . . . . . . 24
1.15 Factory conguraon . . . . . . . . . . . . . . . . 27
1.16 Mounng. . . . . . . . . . . . . . . . . . . . . . . 28
1.17 Installaon precauons . . . . . . . . . . . . . . . 29
1.18 Warranty . . . . . . . . . . . . . . . . . . . . . . . 29
1.19 CE declaraon of conformity . . . . . . . . . . . . 29
2. Output and control modules . . . . . . . . . . . . . . 30
2.1 Module R1. . . . . . . . . . . . . . . . . . . . . . . 30
2.2 Module T1 . . . . . . . . . . . . . . . . . . . . . . . 30
2.3 Module SSR . . . . . . . . . . . . . . . . . . . . . . 31
2.4 Module AO . . . . . . . . . . . . . . . . . . . . . . 31
2.5 Module RTU . . . . . . . . . . . . . . . . . . . . . . 32
2.6 Module S4 . . . . . . . . . . . . . . . . . . . . . . . 32
2.7 Module S2 . . . . . . . . . . . . . . . . . . . . . . . 33
3. Other opons and accessories . . . . . . . . . . . . . 34
3.1 RKB - Remote keypad . . . . . . . . . . . . . . . . . 34
3.2 IPB24 . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.3 IPB26 . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.4 IPB44 . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.5 IPB46 . . . . . . . . . . . . . . . . . . . . . . . . . . 34
3.6 Output cable . . . . . . . . . . . . . . . . . . . . . 35
1.2 How to order
B46 C1
Model Power
-H-
Opon 1
- -
Opon 2
-
Opon 3*
-R1 (1 relay)
-AO (analog output)
-RTU (Modbus RTU)
-S4 (RS-485)
-S2 (RS-232)
-T1 (1 transistor)
-SSR (1 control SSR)
-0 (empty)
-H (85-265 Vac
and 120-370 Vdc)
-L (11-36 Vdc isolated)
Color
-
-R (red led)
-G (green led)
B24 (60 mm, 4 digits)
B26 (60 mm, 6 digits)
B44 (100 mm, 4 digits)
B46 (100 mm, 6 digits)
Others
-
Format
*Opon 3 available
with formats B26 and
B46
1.3 Index

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
4
1.4 Sizes and formats
1.4.1 Format B24
Size A 340 mm
Size B 135 mm
Size C 3 mm
Size D 55 mm
Size E 25 mm
Table 1 - Sizes B24
Cut-out G 322 mm (±1)
Cut-out F 117 mm (±1)
Table 2 - Panel cut-out B24
A
Power
Opon 2 Opon 1
Remote keypad
Signal
Power
Slot for opon 2
Slot for opon 1
Input signal terminal
Remote keypad terminal
CDE
Cable glands
B
F
G
Panel cut-out
(see Table 2)
1.4.2 Format B44
Size A 542 mm
Size B 166 mm
Size C 3 mm
Size D 55 mm
Size E 25 mm
Table 3 - Sizes B44
Cut-out G 524 mm (±1)
Cut-out F 148 mm (±1)
Table 4 - Panel cut-out B44
Power
Opon 2 Opon 1
Remote keypad
Signal
CDE
A
B
F
G
Panel cut-out
(see Table 4)

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
5
1.4.3 Format B26
B
A
Power
Opon 3 Opon 2
Remote keypad
SignalOpon 1
CDE
Cable glands
Power
Slot for opon 3
Slot for opon 2
Input signal terminal
Remote keypad terminal
Slot for opon 1
Size A 436 mm
Size B 135 mm
Size C 3 mm
Size D 55 mm
Size E 25 mm
Table 5 - Sizes B26
Cut-out G 418 mm (±1)
Cut-out F 117 mm (±1)
Table 6 - Panel cut-out B26
F
G
Panel cut-out
(see Table 6)
1.4.4 Format B46
CDE
B
A
Power
Opon 3 Opon 2
Remote keypad
SignalOpon 1
Size A 740 mm
Size B 166 mm
Size C 3 mm
Size D 55 mm
Size E 25 mm
Table 7 - Sizes B46
Cut-out G 722 mm (±1)
Cut-out F 148 mm (±1)
Table 8 - Panel cut-out B46
F
G
Panel cut-out
(see Table 8)

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
6
1.5 To access the instrument
To open the housing, remove the screws from the back cov-
er. With each screw there is a metal washer and a plasc
washer. Once the screws are out, remove the back cover.
The gure below shows the instrument internal structure for
a B26 format. It shows the locaon of the 3 slots for oponal
output and control modules, the power terminal and the in-
put signal terminal.
To close the instrument, place the back cover, the screws,
the metal washer and the plasc washer. The plasc washer
is in contact with the back cover. Conrm that the screws are
correctly turning inside the internal female screws.
To ensure a correct IP65 protecon ghten the back cover
screws with a strength between 30 and 40 Ncm, with the
help of a dynamometer screwdriver.
1.6 Modular system
Large format meters from Series B are designed with an in-
ternal modular architecture. The output and control mod-
ules are independent and can be installed by accessing the
internal circuits of the instrument, and connecng the mod-
ule to the connecon jumpers of the selected slot.
Each module is provided with a cable e to x the module
to the e base. The input signal modules denes the instru-
ment funcon and are exchangeable, switching a tempera-
ture meter to an impulse counter only by replacing the input
signal module.
See secon 2. for informaon regarding the output and con-
trol opons available
To install an output and control module
(1) insert the ‘module pins’ into the
‘connecon jumpers’ in one of the
free slots
(2) place the ‘cable e’ into the ‘e
base’ and embrace the ‘module’
rmly, unl it is xed
Slot 1
Slot 2
Slot 3
Connecon jumpers
Tie base
Cable e
(1)
(2)
Module pins
Output and control module
Power
Slot for opon 1
Slot for opon 2
Input signal terminal
Remote keypad terminal
Slot for opon 3Back cover
Female turret
Waterght seal
Screw
Metal washer
Plasc washer
Observe precauons for handling ESD (elec-
trostac discharge) sensive devices
Risk of electric shock. Removing the back
cover will grant access to the internal cir-
cuits of the instrument. Operaon must be
performed by qualied personnel only.

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
7
1.7 Power connecons and protecve earth
1. Unscrew the screws from the back cover and remove the
back cover (see secon 1.5).
2. Pass the power cable through the power cable gland (see
secon 1.4).
3. Prepare the power cables so that the earth wire is 20 cm
longer than the other cables (see Figure 1).
4. Connect the earth wire to the internal xed screw ‘PE’
(see Figure 2) located at the inside of the back cover. The
instrument internally connects the back cover metallic
Phase (+)
Neutral (-)
Earth
20 cm
Figure 1 - Longer earth wire
Power cable gland
Screws
‘PE’ internal xed screw
Figure 2 - Locaon of the internal ‘PE’ xed screw and power cable gland
structure with the front metallic structure through an in-
ternal green-yellow cable. (doed cable at Figure 3).
5. Connect phase and neutral (in AC power) or posive and
negave (in DC power) to the internal power terminal.
6. The connecons label aached to the outside of the in-
strument has some free space le to write the color or
local code for each cable.
7. To comply with security regulaon 61010-1, add to the
power line a protecon fuse acng as a disconnecon
element, easily accessible to the operator and idened
as a protecon device.
Power ‘H’ 500 mA me-lag fuse
Power ‘L’ 1000 mA me-lag fuse
Power Terminal
(orange)
NL
PE
PE
fuse
Figure 3 - Power connecons
1. Unscrew the screws from the back cover and remove the
back cover (see secon 1.5).
2. Locate the input signal terminal (see secon 1.4).
3. Pass the signal cable through the signal cable gland (see
secon 1.4).
4. Connect the input signal cables (see Figure 4).
5. The connecons label aached to the outside of the in-
strument has some free space le to write the color or
local code for each cable.
1.8 Input signal connecons
Reset
Channel A
Vexc.Channel B
Vexc ABRst
0V
Input Signal
0 V
Channel A Input ‘A’ for impulses
Channel B Input ‘B’ for impulses
Reset Reset connecon
Vexc Excitaon voltage
0V Common
Figure 4 - Signal connecons
The 4 pin terminal located beside
the input signal module allows to
replicate a remote version of the
front keypad. Connect 4 cables
for front keys ‘SQ’ (<), ‘UP’ (5)
and ‘LE’ (3) and for the com-
mon. Pass these cables through
the ‘remote keypad’ cable gland
(see secon 1.4) .
GND
SQ
UP
LE
1.9 Connecons for remote keypad

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
8
Format B24 Format B44 Format B26 Format B46
Number of digits 446 6
Digit height 60 mm 100 mm 60 mm 100 mm
Reading distance 25 meters 50 meters 25 meters 50 meters
Slots for output and control opons 2 2 3 3
Maximum reading 9999 999999
Minimum reading -1999 -199999
Consumpon (without opons installed) 3 W 5.25 W 3.5 W 5.5 W
Consumpon (with opons installed) 5 W 6.75 W 5,5 W 7 W
Weight 2200 gr. 2500 gr. 3500 gr. 4500 gr.
Table 9 - Technical specicaons associated to format
Digits
number of digits 4 or 6 (see Table 9)
digit 7 segments
view angle 120º
color red or green
digit height (see Table 9)
Reading
max., min. (see Table 9)
decimal point congurable
overrange / underrange congurable (ash, reset or pre-
set) (see secon 1.13.23)
display refresh 15 refresh / second
memory yes, recovers the last counter
value aer power loss
Input signal
signals accepted NPN, PNP, Namur, pick-up, TTL,
inducve, mechanical, quadra-
ture, ...
vdc max. at input ±30 Vdc
input impedance 2.4 K with pull-up or pull-down
470 K without pull resistances
frequency max./min. for counter modes (see Table 12)
for ratemeter modes (see Table 13)
for periodmeter modes (see
Table 13)
quartz accuracy ±0.01 %
thermal dri 20 ppm / ºC
wires secon max. 0.5 mm2
Excitaon voltage
output voltage +18 Vdc, +15 Vdc, +9 Vdc, +5 Vdc
selectable by menu
maximum current 70 mA
protecon yes, current limited to 70 mA
1.10 Technical specicaons
Power
power ‘H’ 85 to 265 Vac and 120 to 370 Vdc
isolated (isolaon 2500 Vac)
power ‘L’ 11 to 36 Vdc isolated
(isolaon 1500 Vdc)
consumpon (see Table 9)
fuses (see secon 1.7)
wire secon max. 2.5 mm2
Conguraon front keypad with 3 keys
remote keypad (see secon 3.1)
Output and control opons relay output, analog retransmission,
Modbus RTU, ... (see secon 2)
Mechanical
IP protecon full IP65 housing
mounng panel, wall , hanging (see secon
1.16)
connecons cable gland outputs
internal plug-in screw terminals
housing material textured iron, black painted
methacrylate front lter
weight (see Table 9)
front sizes (see secon 1.4)
panel cut-out (see secon 1.4)
depth (see secon 1.4)
Temperature
operaon from 0 to +50 ºC
storage from -20 to +70 ºC
warm-up me 15 minutes

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
9
1.11 Funcons included
Error messages related to the local instrument are shown on
display, in ash mode (see Table 11). Examples given are for
instrument with 6 digit formats.
1.12 Messages and errors
Messages and errors on display
‘Err.1’ incorrect password.
‘Err.2’ at ‘oPt.X’ menu entry. Installed module is not
recognized.
‘Err.W’ ‘Watchdog’ error
‘999999’ + ashing mode. Reading is in overrange.
‘-199999’ + ashing mode. Reading is in underrange.
Table 11 - Messages and error codes for local instrument
Funcons included Secon
Fast access menu yes, congurable 1.13.17
‘SLOW’ mode yes, for slow frequencies 1.13.9
‘FAST’ mode yes, for fast counng 1.13.3
Mulplier and divider from 1 to 999999 1.13.3
1.13.9
Reset congurable : front, external
and linked to alarm
1.13.3
1.13.15
1.13.19
Preset yes 1.13.3
Trigger level congurable 1.13.13
Sensor selecon by menu 1.13.13
Cycle counter yes 1.13.15
Retenon memory yes, recovers with power 1.10
‘On Power Up’ yes 1.13.18
Excitaon voltage congurable 1.13.13
Average lter recursive 1.13.3
1.13.9
Memory max., min., cycles 1.13.17
Password conguraon locked 1.13.26
Alarms
simple or double setpoint
acvaon delays
deacvaon delays
hysteresis
inverted relays
locked alarms
1.13.15
Brightness congurable, 5 levels 1.13.29
Table 10 - Funcons included
Counters Mode Frequency Secon
Counter
‘FAST’ mode max. 250 KHz
1.13.3
normal mode max. 9 KHz
Counter + inhibion max. 9 KHz
Counter + control Add / Subtract max. 9 KHz
Dierenal counter max. 9 KHz
Quadrature
counter
mode x1 max. 17 KHz
mode x2 max. 16 KHz
mode x4 max. 11 KHz
Table 12 - Maximum frequency for counter modes
Ratemeter Mode Frequency Secon
Ratemeter
normal mode max
. 500 KHz
1.13.9
‘SLOW’ mode max. 200 Hz
min. 1 mHz
Quadrature
Ratemeter
mode x1 max. 17 KHz
mode x2 max. 16 KHz
mode x4 max. 11 KHz
Table 13 - Maximum and minimum frequency for ratemeter
modes
Periodmeter Mode Frequency Secon
Periodmeter
normal mode
max. 500 KHz
1.13.9
‘SLOW’ mode
max. 200 Hz
min. 1 mHz
(1000 sec.)
Table 14 - Maximum and minimum frequency for periodmeter
modes

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
10
The instrument has two menus accessible to the user :
‘Conguraon menu’ (key ‘SQ’) (<)
‘Fast access’ menu (key ‘UP’) (5)
Conguraon menu
The ‘conguraon menu’ modies the conguraon param-
eters to adapt the instrument to the applicaon needs. To
access the ‘conguraon menu’ press for 1 second the ‘SQ’
(<) key. This access can be blocked by acvang the ‘Pass-
word’ (‘PASS’) funcon. While operang the ‘conguraon
menu’, the alarm status is ‘hold’ to the status it had before
accessing the menu, and the output and control modules re-
main in ‘error’ state. When leaving the ‘conguraon menu’,
the instrument applies a system reset, followed by a brief
disconnecon of the alarms and the output and control
modules. Funconality is then recovered.
For a detailed explanaon on the ‘conguraon menu’ see
the following secons, and for a full view of the ‘congura-
on menu’ see secon 1.14.
‘Fast access’ menu
The ‘fast access’ menu is an operator congurable menu,
providing fast and direct access to the most usual funcons
of the instrument with a single key pad stroke. Press key ‘UP’
(5) to access this menu.
See secon 1.13.17 for a list of selectable funcons for the
‘fast access’ menu in this instrument. The ‘Password’ (‘PASS’)
funcon does not block access to this menu. Accessing and
modifying parameters in the ‘fast access’ menu does not in-
terfere with the normal funconality of the instrument, and
it does not generate any system reset when validang the
changes.
Operang with the front keypad inside the menus
Key ‘SQ’ (<) - press the ‘SQ’ (<) key for 1 second to access
the ‘conguraon menu’. Inside the menu, the ‘SQ’ (<) key
acts as an ‘ENTER’. It enters into the menu opon selected,
and when entering a numerical value, it validates the num-
ber.
Key ‘UP’ (5) - press the ‘UP’ (5) key to access the ‘fast ac-
cess’ menu. Inside the menu,the ‘UP’ (5) key sequenally
moves through the available parameters and menu entries.
When entering a numerical value, it modies the digit se-
lected by increasing its value to 0, 1, 2, 3, 4, 5, 6, 7, 8, 9.
1.13 Conguraon
1.13.1 How to operate the menus
Key ‘LE’ (3) - press the ‘LE’ (3) key to acvate the cong-
ured special funcons associated to this key. Inside the menu,
the ‘LE’ (5) acts as an ‘ESCAPE’. It leaves the selected menu
level and eventually, by leaving all menu levels, it leaves from
the conguraon menu. Then changes are applied and the
instrument is back to normal funcon. When entering a nu-
merical value, it selects the acve digit, and the value is then
modied by key ‘UP’ (5).
‘Rollback’
Aer 30 seconds without interacon from the operator, the
instrument will rollback and leave the ‘conguraon menu’
or the ‘fast access’ menu. All changes will be discarded.
Instruments with 4 and 6 digits
The conguraon menus included in this document show
values for a 6 digit instrument. In case of 4 digit instruments,
note that maximum reading values should be 9999 instead
of 999999 to 9999 and minimum reading values should be
-1999 instead of -199999.
(2)
(3)
(3)
(3)
(3)
(3)
(4)
(4)
(4)
(4)
(5)
(5)
(5)
(5)
(3)
(3)
(6)
(6)
(1)
Example of operaon inside
the ‘conguraon menu’.
1. The (<) key enters into the
‘conguraon menu’.
2. The (<) key enters into the
‘InP’ menu.
3. The (5) key moves through
the menu opons.
4. The (<) key selects the de-
sired range and returns to
the ‘InP’ menu.
5. The (3) key leaves the ac-
tual menu level and moves
to the previous menu level.
6. The (3) key leaves the ‘con-
guraon menu’. Changes
are applied and saved at
this moment.
Figure 5 - Example of operaon inside the ‘conguraon menu’

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
11
1.13.2 Inial set-up
To congure the inial set up, select the main funcon for
the instrument, the decimal point posion, congure the
main funcon selected and congure the sensor.
Enter the ‘Main funcon’ (‘Func’) menu and select the de-
sired funcon, from the 5 counng modes, 2 ratemeter
modes and the periodmeter mode available.
• select ‘Counter’ (‘cn. 1’) for a standard impulse counter.
Impulses are received at channel A. Channel B is disabled.
• select ‘Counter quadrature’ (‘cnq.2’) for a quadrature
counter. Impulses are received at channel A and B, in quadra-
ture format (typical for bidireconal encoders).
• select ‘Counter + inhibion’ (‘cnI.3’) for a counter with
an external control to inhibit the counng. Impulses are
received at channel A. The state of channel B controls de
inhibion funcon.
• select ‘Counter + control add / subtract’ (‘cnc.4’) for a
counter with an external control to add or subtract impuls-
es received. Impulses received at channel A. The state of
channel B controls de add or subtract funcon.
• select ‘Counter dierenal’ (‘cnd.5’) for a counter where
impulses received at channel A add and impulses received
at channel B subtract.
• select ‘Ratemeter’ (‘rt.6’) for a standard ratemeter. Im-
pulses are received at channel A. Channel B is disabled.
• select ‘Ratemeter quadrature’ (‘rtq.7’) for a quadra-
ture ratemeter. Impulses are received at channel A and B, in
quadrature format (typical for bidireconal encoders.
• select ‘Periodmeter’ (‘Prd.8’) for a standard periodmeter.
Impulses are received at channel A. Channel B is disabled.
At the ‘Decimal point’ (‘dP’) parameter, select the decimal
point posion. Move the decimal point with the ‘LE’ (3) key.
Congure the funcon mode selected (‘cnF.2’ to ‘cnF.8’) at
the next menu entry (‘cnF.1’ to ‘cnF.8’). See secons 1.13.3
to 1.13.12.
Congure the sensor at the ‘SnSr’ menu. See secon 1.13.13.
Press ‘SQ’ (<) for 1 second to access the ‘conguraon
menu’. For a descripon on how to operate inside the menus
see secon 1.13.1. For a full vision of the ‘conguraon menu’
structure see secon 1.14.
Main funcon
Counter
Quadrature counter
Counter + inhibion
Counter + control add / subtract
Dierenal counter
Ratemeter
Quadrature Ratemeter
Periodmeter
Decimal point
The next menu entry is the conguraon parameters for the ‘Main
funcon’ (‘Func’) selected. Conguraon parameters are slightly
dierent for each ‘main funcon’. All possible conguraon menus
are explained, ‘cnF.1’ to ‘cnF.7’, one for each ‘main funcon’. Only
the conguraon menu for the ‘main funcon’ selected is visible
on the instrument.

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
12
at channel ‘A’.
• Counter with add / subtract control (‘cnc.4’) (see secon
1.13.7) increases the counter with impulses received at
channel ‘A’ if channel ‘B’ is acve. Deacvate channel ‘B’ to
decrease the counter with impulses received at channel ‘A’.
• Dierenal counter (‘cnd.5’) (see secon 1.13.8) increases
the counter with impulses receive at channel ‘A’ and de-
creases the counter with impulses received at channel ‘B’.
All counter modes have scalable reading through mulplier
(1 to 999999) and divider (1 to 999999) parameters, congu-
rable preset value (preset value loads on display when ‘reset’
funcon acvates), congurable reset funcon and accessible
from external terminal, front keypad or at alarm acvaon.
Alarms with independent acvaon and deacvaon delays
and funcons to load ‘preset’ or ‘0’ to generate cycles of
counng from ‘preset’ to ‘alarm setpoint’ and back. The num-
ber of cycles is accessible.
In case of power loss, the instrument recovers the last congu-
raon and last counted value.
1.13.3 Counter modes descripon
The instrument oers 5 selectable impulse counter modes.
Each mode has 2 independent input channels ‘A’ and ‘B’. Each
impulse counter mode has a specic funcon assigned to
channel ‘B’.
• Standard counter (‘cn.1’) (see secon 1.13.4) counts im-
pulses received at channel ‘A’. This counter has an oponal
‘FAST’ mode to count high frequencies up to 250 KHz. The
‘FAST’ mode detects impulses on the rising edge of the im-
pulse. The rst edge received (rising or falling) aer the in-
strument start up (aer power loss or conguraon change)
will not be counted as a valid impulse, as it is needed for
internal inializaon.
• Quadrature counter (‘cnq.2’) (see secon 1.13.5) counts
quadrature impulses received at channels ‘A’ and ‘B’, (for ex-
ample from a bidireconal encoder). The counter increases
or decreases depending on the sense of turn of the encoder.
• Counter with inhibit (‘cnI.3’) (see secon 1.13.6) counts im-
pulses received at channel ‘A’ if channel ‘B’ is inacve. Ac-
vate channel ‘B’ to inhibit the counng of impulses received
Conguraon menu for mode ‘quadrature counter’ (‘cnq.2’).
Total impulses received are mulplied by the value of the
‘mulplier’ (‘MuLt’) parameter and divided by the ‘divider’
(‘dIV’) parameter. Result is shown on the display..
• set the ‘Mulplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• set the ‘Preset’ (‘PrSt’) parameter from -199999 to 999999.
Acvate the reset to load the preset value on display.
• at the ‘Quadrature edges’ (‘q.124’) parameter select the
number of edges to consider. Select ‘1--1’ for 1 impulse
per quadrature cycle, ‘1--2’ for 2 impulses per quadrature
cycle, ‘1--4’ for 4 impulses per quadrature cycle.
Quadrature
counter conf.
Mulplier
1 to 999999
Divider
1 to 999999
Mulplier
Divider
Preset
Preset value
-199999 to 999999
Quadrature
edges
1 imp. per cycle
2 imp. per cycle
4 imp. per cycle
Conguraon menu for mode ‘counter’ (‘cn.1’). Total im-
pulses received are mulplied by the value of the ‘mulplier’
(‘MuLt’) parameter and divided by the ‘divider’ (‘dIV’) pa-
rameter. Result is shown on the display.
• set the ‘Mulplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• set the ‘Preset’ (‘PrSt’) parameter from -199999 to 999999.
Acvate the reset to load the preset value on display.
• at the (‘ModE’) parameter select ‘uP’ to count upwards
(impulses received add) or select ‘doWn’ to count down-
wards (impulses received subtract).
• at the ‘FAST’ (‘FASt’) parameter select ‘on’ to acvate the
fast mode. See secon 1.13.3 for more informaon.
1.13.4 Standard counter ‘cn.1’ conguraon menu
Mulplier
1 to 999999
Divider
1 to 999999
Counter
conguraon
Mulplier
Divider
Preset
Preset value
-199999 to 999999
Mode
Increasing
Decreasing
‘FAST’ mode
1.13.5 Quadrature counter ‘cnq.2’ conguraon menu

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
13
1.13.6 Counter + inhibion ‘cn.3’ conguraon menu
Mulplier
1 to 999999
Divider
1 to 999999
Counter +
inhibion conf.
Mulplier
Divider
Preset
Preset value
-199999 to 999999
Mode
Increasing
Decreasing
Inhibion
Inhibits if channel
‘B’ to high
Inhibits if channel
‘B’ to low
Conguraon menu for mode ‘counter + control add / sub-
tract’ (‘cnc.4’). Total impulses received are mulplied by the
value of the ‘mulplier’ (‘MuLt’) parameter and divided by
the ‘divider’ (‘dIV’) parameter. Result is shown on the display.
• set the ‘Mulplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• set the ‘Preset’ (‘PrSt’) parameter from -199999 to 999999.
Acvate the reset to load the preset value on display.
• at the ‘Control A/S’ (‘Add’) parameter select ‘on_h’ increase
the counter with impulses received at channel ‘A’ when chan-
nel ‘B’ is acve (logical state ‘1’) or select ‘on_0’ to decrease
the counter with impulses received at channel ‘A’ when chan-
nel ‘B’ is inacve (logical state ‘0’).
1.13.7 Counter + control add / subtract ‘cnc.4’ conguraon menu
Mulplier
1 to 999999
Divider
1 to 999999
Counter + control
add / subtract conf.
Mulplier
Divider
Preset
Preset value
-199999 to 999999
Control A/S
Adds if channel ‘B’
to high
Subtracts if chan-
nel ‘B’ to low
Conguraon menu for mode ‘dierenal counter’ (‘cnd.5’).
Total impulses received are mulplied by the value of the
‘mulplier’ (‘MuLt’) parameter and divided by the ‘divider’
(‘dIV’) parameter. Result is shown on the display.
• set the ‘Mulplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• set the ‘Preset’ (‘PrSt’) parameter from -199999 to 999999.
Acvate the reset to load the preset value on display.
Impulses received on channel ‘A’ add to the counter. Impuls-
es received on channel ‘B’ subtract from the counter.
1.13.8 Dierenal counter ‘cnd.5’ conguraon menu
Mulplier
1 to 999999
Divider
1 to 999999
Dierenal
counter conf.
Mulplier
Divider
Preset
Preset value
-199999 to 999999
Conguraon menu for mode ‘counter + control inhibion’
(‘cnI.3’). Total impulses received are mulplied by the value
of the ‘mulplier’ (‘MuLt’) parameter and divided by the ‘di-
vider’ (‘dIV’) parameter. Result is shown on the display.
• set the ‘Mulplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• set the ‘Preset’ (‘PrSt’) parameter from -199999 to 999999.
Acvate the reset to load the preset value on display.
• at the ‘Mode’ (‘ModE’) parameter select ‘uP’ to count up-
wards (impulses increase the counter) or select ‘doWn’ to
count downwards (impulses decrease the counter).
• at the ‘inhibion’ (‘Inh’) parameter select ‘on_h’ to inhibit
the counter when channel ‘B’ is acve (logical state ‘1’) or se-
lect ‘on_0’ to inhibit the counter when channel ‘B’ is inacve
(logical state ‘0’).

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
14
1.13.9 Ratemeter and periodmeter modes descripon
The instrument oers 2 selectable ratemeter modes and 1
periodmeter mode. Ratemeters provide a reading propor-
onal to the frequency measured, while reading at period-
meters is proporonal to the me between impulses
• Standard ratemeter (‘rt.6’) (see secon 1.13.10) to read
speed values from impulse frequency signals.
• Quadrature ratemeter (‘rtq.7’) (see secon 1.13.11) to
read speed values and the turning sense of the axis, from
two quadrature frequency signals, such as those pro-
vided by a bidireconal encoder. Speed is posive when
the quadrature turns clockwise and negave when turns
counterclockwise.
• Standard periodmeter (‘Prd.8’) (see secon 1.13.12) to
read me between impulses. For applicaons with long
periods (long me between impulses) the ‘SLOW’ mode
oers the best possible response me for each applica-
on.
All modes have scalable reading through mulplier (1 to
999999) and divider (1 to 999999) parameters, and a cong-
urable me window (‘GAtE’) to adjust the measure refresh
me.
Conguraon menu for mode ‘ratemeter’ (‘rt.6’). Mea-
sured frequency is mulplied by the value of the ‘mulplier’
(‘MuLt’) parameter and divided by the ‘divider’ (‘dIV’) pa-
rameter. Result is shown on the display. The measure is up-
dated on display as congured on the ‘GAtE’ parameter.
• set the ‘Mulplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• select the ‘Time window’ (‘GAtE’) parameter at 0.5, 1.0, 2.0,
4.0, 8.0 or 16.0 seconds. This parameter denes how oen
the measure will be refreshed on display. This parameter
has no eect if ‘SLOW’ mode is acve.
• for slow frequencies acvate the ‘SLoW’ parameter con-
guring the ‘tIME’ parameter between 1 and 1000 seconds.
See 1.13.9 for more informaon. Congure the ‘nuMb’ pa-
rameter between 1 and 32 impulses.
• if reading is unstable, set the ‘Average lter’ (‘AVr’) param-
eter to ‘on’ to acvate a recursive lter on the display, and
congure the lter strength from 0.0 to 99.9. The lter is
stronger for higher values. Strong lters make readings more
stable and changes slower to update. Set ‘0’ to disable the
lter.
1.13.10 Ratemeter ‘rt.6’ conguraon menu
Mulplier
1 to 999999
Divider
1 to 999999
Seconds
Ratemeter
conf.
Mulplier
Divider
Time window
• ‘SLOW’ mode
The ‘SLOW’ mode is an oponal mode for very slow appli-
caons. Applies to ratemeter and periodmeter modes. The
‘SLOW’ mode accepts measures frequencies down to 1 mHz
(0,001 Hz or 1000 seconds between impulses), and is func-
onal up to 200 Hz.
The ‘SLOW’ mode oers the fastest response me for any
given applicaon, calculang the frequency and period val-
ues each me a new impulse is received.
At the The ‘Max. waing me’ parameter set a value be-
tween 1 and 1000 seconds. Select ‘0’ to disable the ‘SLOW’
mode. If me between impulses is higher than the congured
value, the instrument assumes that the signal has stopped
and forces the reading to ‘0’ (both in ratemeters and peri-
odmeters). The ‘GATE’ parameter has no eect if the ‘SLOW’
mode is acve.
At the The ‘Number of pulses’ parameter set a value be-
tween 1 and 32. This paremeter denes the number of puls-
es that will be taken to calculate the period.
In ‘Quadrature ratemeter’ (‘rtq.7’) mode, the ‘SLOW’ mode
calculates the frequency between two consecuve impulses
received at channel ‘A’, and calculates the turning direcon
by comparing impulses at channel ‘A’ with the state of chan-
nel ‘B’. The ‘Quadrature edges’ parameter is xed to ‘1--1’.
Applicaon: to measure the speed of the propeller on ships,
using two inducve sensors in quadrature, at low revolu-
ons per minute.
‘SLOW’ mode
Average lter
Filter strength
(0 = disabled)
Max. waing me
Number of pulses

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
15
1.13.11 Quadrature ratemeter ‘rtq.7’ conguraon menu
Conguraon menu for mode ‘quadrature ratemeter’
(‘rtq.7’). Measured frequency is mulplied by the value of
the ‘mulplier’ (‘MuLt’) parameter and divided by the ‘di-
vider’ (‘dIV’) parameter. Result is shown on the display. The
measure is updated on display as congured on the ‘GAtE’
parameter.
• set the ‘Mulplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• select the ‘Time window’ (‘GAtE’) parameter at 0.5, 1.0, 2.0,
4.0, 8.0 or 16.0 seconds. This parameter denes how oen
the measure will be refreshed on display. This parameter
has no eect if ‘SLOW’ mode is acve.
• at the ‘Quadrature edges’ (‘q.124’) parameter select the
number of edges to consider. Select ‘1--1’ for 1 impulse
per quadrature cycle, ‘1--2’ for 2 impulses per quadrature
cycle, ‘1--4’ for 4 impulses per quadrature cycle.
• for slow frequencies acvate the ‘SLoW’ parameter con-
guring the ‘tIME’ parameter between 1 and 1000 seconds.
See 1.13.9 for more informaon. Congure the ‘nuMb’ pa-
rameter between 1 and 32 impulses.
• if reading is unstable, set the ‘Average lter’ (‘AVr’) param-
eter to ‘on’ to acvate a recursive lter on the display, and
congure the lter strength from 0.0 to 99.9. The lter is
stronger for higher values. Strong lters make readings more
stable and changes slower to update. Set ‘0’ to disable the
lter.
Mulplier
1 to 999999
Divider
1 to 999999
Seconds
Quadrature
ratemeter conf.
Mulplier
Divider
Time window
Quadrature
edges
1 imp. per cycle
2 imp. per cycle
4 imp. per cycle
1.13.12 Periodmeter ‘Prd.8’ conguraon menu
Conguraon menu for mode ‘periodmeter’ (‘Prd.8’). Mea-
sured period is mulplied by the value of the ‘mulplier’
(‘MuLt’) parameter and divided by the ‘divider’ (‘dIV’) pa-
rameter. Result is shown on the display. The measure is up-
dated on display as congured on the ‘GAtE’ parameter.
• set the ‘Mulplier’ (‘MuLt’) parameter from 1 to 999999.
• set the ‘Divider’ (‘dIV’) parameter from 1 to 999999.
• select the ‘Time window’ (‘GAtE’) parameter at 0.5, 1.0, 2.0,
4.0, 8.0 or 16.0 seconds. This parameter denes how oen
the measure will be refreshed on display. This parameter
has no eect if ‘SLOW’ mode is acve.
• for slow frequencies acvate the ‘SLoW’ parameter con-
guring the ‘tIME’ parameter between 1 and 1000 seconds.
See 1.13.9 for more informaon. Congure the ‘nuMb’ pa-
rameter between 1 and 32 impulses.
• if reading is unstable, set the ‘Average lter’ (‘AVr’) param-
eter to ‘on’ to acvate a recursive lter on the display, and
congure the lter strength from 0.0 to 99.9. The lter is
stronger for higher values. Strong lters make readings more
stable and changes slower to update. Set ‘0’ to disable the
lter.
Mulplier
1 to 999999
Divider
1 to 999999
Periodmeter
conf.
Mulplier
Divider
Time window
Seconds
‘SLOW’ mode
Average lter
Filter strength
(0 = disabled)
Max. waing me
Number of pulses
‘SLOW’ mode
Average lter
Filter strength
(0 = disabled)
Max. waing me
Number of pulses

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
16
1.13.13 Accepted sensors and signals
Sensor Connecons
(0 signal Vexc)
Pulls Vexc. Anrrebound
lter
Trigger
level
Mechanical
contact
0 V ‘A’ pull-up no 100 mSeg. 2,5 Vdc
Namur ‘A’ Vexc pull-down 9 Vdc no 3,0 Vdc
NPN 2 wires 0 V ‘A’ pull-up 18 Vdc no 2,5 Vdc
NPN 3 wires 0 V ‘A’ Vexc pull-up 18 Vdc no 2,5 Vdc
PNP 2 wires 0 V ‘A’ pull-down 18 Vdc no 2,5 Vdc
PNP 3 wires 0 V ‘A’ Vexc pull-down 18 Vdc no 2,5 Vdc
Push-pull 0 V ‘A’ Vexc no 18 Vdc no 2,5 Vdc
TTL
CMOS
Pick-up
0 V ‘A’ no 5 Vdc no 2,5 Vdc
AC<30 Vp
Inducve 0 V ‘A’ no no no 0 Vdc
Table 15 - Parameters congured and connecons for listed sensors. Channel ‘B’ ap-
plies the same connecons as indicated for channel ‘A’
The instrument accepts the usual sensors and impulse sig-
nals, and provides a list for the operator to choose his sen-
sor. It also allows to congure a wide range of parameters
to adapt the reading to other non usual sensors and signals.
The directly selectable sensors are:
• Mechanical contact (free potenal contact)
• Namur
• NPN and PNP, 2 or 3 wires
• Push-pull
• TTL and CMOS
• Pickup
• AC voltage signals up to 30 Vp (inducve)
The congurable parameters are:
• Pull-up / pull-down resistors can be enabled or disabled
independently for channel ‘A’, channel ‘B’ and the reset
channel.
• The trigger level can be manually congured to any value
between 0.0 V and 3.9 V. While modifying the trigger level
parameter (press ‘UP’ (5) to increase, press ‘LE’ (3) to
decrease), the two segments to the le show the actual
state ‘1’ or ‘0’ for channels ‘A’ and ‘B’. This informaon
helps to easily idenfy the real trigger level. When the le
segments switch from ‘high’ to ‘low’ means that the trig-
ger level for channels ‘A’ and ‘B’ has been reached. The
same trigger level applies to channels ‘A’, ‘B’ and reset.
• Acvaon by rising or falling edges can be congured.
Channels ‘A’ and ‘B’ share the same conguraon. Reset
has its own independent conguraon.
• Excitaon voltage can be congured to 5 V, 9 V, 15 V o 18 V,
or even power o the excitaon voltage.
• An anrrebound lter is congurable, by seng a me
between 0 and 1000 mSeconds. When an impulse is
received,the instrument inhibits the counng of new im-
pulses for the me congured.
See Table 15 below for a list of directly selectable sensors,
the associated conguraon parameters for each one and
connecons. Parameters can be later on modied through
the conguraon menu.
For signal connecons and reset connecons, see secon
1.8.
channel ‘A’
Level ‘1’
‘trigger’ level
Level ‘0’
‘Trigger Sense’ leds
channel ‘B’
Vdc
t
‘Trigger’ level
at 1.8 Vdc
‘1’
‘0’ t
Figure 6 - ‘Trigger sense’ for detecon of trig-
ger level

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
17
1.13.14 Sensor conguraon menu
The ‘Sensor’ (‘SnSr’) conguraon menu contains all param-
eters related to the detecon of the input signal, excitaon
voltage and trigger levels.
• enter the ‘Automac conguraon’ (‘Auto’) menu to se-
lect a standard sensor from the list. The instrument will con-
gure the appropriate parameters for the sensor selected,
as indicated at Table 15. If the instrument does not detect
the signal with this conguraon, the following parameters
can be manually recongured.
• at ‘Channel A pulls’ (‘PuL.A’) select ‘P.uP’ to acvate the
internal pull-up resistors needed for NPN sensors, select
‘P.dn’ to acvate the internal pull-down resistors needed
for PNP sensors, or select ‘no’ to disable the pull resistors.
Selecng pull-up or pull-down resistors sets the trigger lev-
el to 2,5 Vdc.
• at ‘Channel B pulls’ (‘PuL.b’) applies the same as previous
entry but for channel B.
• ‘Reset pulls’ (‘PuL.r’) - applies the same as previous entry
but for the reset channel.
• at ‘Trigger level’ (‘trIG’) congure the trigger level to de-
tect the impulses. Signals levels above the trigger level are
‘1’ signals, and signal levels below trigger level are ‘0’ sig-
nals. Trigger level is selectable between 0,0 and 3,9 Vdc.
Channels ‘A’ and ‘B’ share the same trigger level. Trigger
level for reset channel is xed at 2.5 Vdc. Vercal leds to the
le are part of the ‘trigger sense’ ulity to help locate the
real trigger level for the actual signal. See secon 1.13.13
for more informaon.
• at ‘Channel A acvaon’ (‘Act.A’) congure the acvaon
of channel ‘A’ by rising edge (‘on_h’) or falling edge (‘on_0’)
• at ‘Reset acvaon’ (‘Act.r’) congure the acvaon of
reset by rising edge (‘on_h’) or falling edge (‘on_0’)
• at ‘Excitaon voltage’ (‘V.EXc’) congure the value for the
excitaon voltage to 5 Vdc, 9 Vdc, 15 Vdc or 18 Vdc. Select
‘no’ to disable the excitaon voltage.
• at ‘Anrrebound’ (‘rbnd’) congure the lter that prevents
mechanical rebounds to be accepted as real impulses. Con-
gure a value between 0 and 1000 mSeconds. When an im-
pulse is received,the instrument inhibits the counng of new
impulses for the me congured. When me is over, the next
impulse is accepted and the lter acvates again. Recom-
mended value is 100 mSeconds for a mechanical contact.
Sensor
NPN 2 wires
Mechanical contact
Namur
Automac
conguraon
NPN 3 wires
PNP 2 wires
PNP 3 wires
Push pull
TTL
CMOS
Pick-up
Inducve
Vac <30 V
rising edge
falling edge
Channel A
acvaon
rising edge
falling edge
Reset acva-
on
Channel B pulls
Pull down
No pulls
Pull up
Pull down
No pulls
Pull up
Reset pulls
Pull down
No pulls
Pull up
Channel A pulls
Trigger level
0.0 Vdc to 3.9 Vdc
Anrrebound
0 to 1000 mSec.
Excitaon
voltage

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
18
1.13.15 Alarms
The instrument manages 3 independent internal alarms,
each one controlling the acvaon of an oponal relay,
transistor or control SSR output.
Oponal modules (see secon 2) are installed at the free
slots inside the instrument (see secon 1.4). B24 and B44
formats have 2 free slots for output and control modules,
while B26 and B46 formats have 3 free slots for output
and control modules.
The instrument has 3 front leds that reect the state of
the 3 internal alarms. These leds are only for local help
during installaon, as they are not appropriate for long
distance reading.
Each alarm controls the acvaon of the relay, transis-
tor or control SSR installed on its associated slot, and the
front led.
• Congurable parameters
Each alarm has several parameters for conguraon,
starng with the usual setpoint, hysteresis and maxi-
mum (alarm acve when reading is higher than setpoint)
or minimum (alarm acve when reading is lower than
minimum) alarm types (see Figure 7).
• Acvaon and deacvaon delays
Each alarm can congure independent acvaon and
deacvaon delays. These delays aect the alarm as a
whole, and the delay will aect the front led and the as-
sociated relay.
• Second setpoint
Conguring a second setpoint creates ‘windowed
alarms’. The windowed alarm controls with a single relay
output if the reading is inside or outside the values de-
ned (see Figure 8).
• Inverted relay
Acvate the ‘inverted relay’ funcon to invert the acva-
on logic of the associated relay.
• ‘Locked alarms’
Acvate the ‘locked alarms’ funcon will force the op-
erator to interact with the instrument when an alarm
has been acvated. Once acvated, the alarm will re-
main locked at acve state, even is the reading returns
to a value below setpoint, unl the operator manually
unlocks the alarms pressing the front key ‘LE’ (or the re-
mote key ‘LE’, see secon 3.1).
• ‘On alarm’ funcons
The ‘on alarm’ funcons allow to associate a funcon to
the alarm acvaon event. Funcons available are re-
set to ‘0’, load the preset value, or do nothing. Funcons
reset and preset create counng cycles (from 0, then to
setpoint, then to 0 again, ...). The number of cycles per-
formed can be accessed through the fast access menu
(see secon 1.13.17) .
Reading
t
setpoint
histéresis
Alarm as maximum, no
hysteresis, no delays
on
o
acvaon
delay
on
o
deacvaon
delay
Alarm as maximum,
hysteresis and delays
on
o
Alarm as minimum, no
hysteresis, no delays
t
t
t
Figure 7 - Example for alarm with 2 setpoint
Reading
t
Setpoint 2
Setpoint 1
Alarm as minimum , with
double setpoint, no hyster-
esis, no delays
on
o t
Figure 8 - Example for alarm with 2 setpoints

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
19
To congure the alarm, access the alarm menu (‘ALr1’,
‘ALr2’ or ‘ALr3’) and congure the following parameters :
• at the ‘Acve’ (‘Act’) parameter select ‘on’
• at the ‘Type of alarm’ (‘TypE’) parameter select ‘MAX’
for maximum alarm (acvates when reading is higher
than setpoint), or ‘MIn’ for minimum alarm (acvates
when reading is lower than setpoint).
• at the ‘Setpoint’ (‘SEt’) parameter congure the alarm
acvaon point. Parameter value is accessible through
‘fast access’
(see secon 1.13.17) .
• at the ‘Hysteresis’ (‘hySt’) parameter select the hys-
teresis value. Hysteresis applies to the alarm deacva-
on. Alarm deacvates once the reading is beyond the
setpoint plus the hysteresis value. Hysteresis prevents
relay switching in case of signal uctuaons close to the
setpoint value.
• at the ‘Acvaon delay’ (‘dEL.0’) parameter congure
the delay to apply before the alarm is acvated. Delay
starts to count once the setpoint is reached. Value from
0.0 to 99.9 seconds.
• at the ‘Deacvaon delay’ (‘dEL.1’) parameter cong-
ure the delay to apply before the alarm is deacvated.
Delay starts to count once the setpoint is reached plus
the hysteresis value. Value from 0.0 to 99.9 seconds.
• to work with ‘windowed alarms’
(see Figure 8) acvate
‘Setpoint 2’ (‘SEt2’) to ‘on’ and then congure the de-
sired second setpoint value. Second setpoint must al-
ways be higher in value than the rst setpoint.
• at the ‘Inverted relay’ (‘r.Inv’) parameter select ‘on’ to
invert the acvaon logic of the relay. Relay is inacve
when alarm is acve, and relay is acve when alarm is
inacve.
• at the ‘Locked alarm’ (‘A.Lck’) parameter select ‘on’ to
block the automac alarm deacvaon. Alarm deacva-
on must be performed manually, by pressing the ‘LE’
front buon
(see secon 1.13.19) .
• at the ‘On alarm’ (‘on.AL’) parameter congure the ac-
on to acvate when the alarm acvates. Select ‘cont’ to
do nothing and connue counng, select ‘to_0’ to load
a ‘0’ on display, or select ‘to_p’ to load the preset value
on display. Selecng ‘to_0’ or ‘to_p’ congures ‘dEL.1’
to 1 second.
1.13.16 Alarms conguraon menu
Alarm 1
Alarms
On alarm
Connue
to ‘0’
to preset
Setpoint
Hysteresis
Setpoint 2
Acve
Type of alarm
Acvaon
delay
Deacvaon
delay
Inverted relay
Locked alarm

FEMA ELECTRÓNICA . SERIES B . Models Bxx-C1
20
1.13.17 Fast access
The ‘On Power Up’ (‘on.Pu’) funcons allows to dene a se-
ries of acons to acvate when the instrument restarts aer
a power loss. Funcons available are a delay so the instru-
ment waits a dened me before starng to measure and
control, and an automac reset of the counter. The funcons
will apply only aer a restart due to power-loss, they will not
apply aer a restart due to changes in conguraon.
Delaying the measure and control funcons gives addional
me to elements of the system who are slower, so they can
start completely before the instrument begins to acquire sig-
nal and control the outputs.
1.13.18 ‘On power up’ funcon
1.13.19 Key ‘LE’
The ‘fast access’ is an operator congurable menu. The op-
erator can access this menu with a single press of the front
key ‘UP’ (5). The congured menu entries will be accessible.
Eligible parameters to be accessed by this menu are:
• access to the alarm setpoints through the ‘UP’ (5) key al-
lows to read and modify the values.
• access to the maximum and minimum alarms through the
‘UP’ (5) key allows to read and reset the values. To reset
the memory values: visualize the value on display, press the
‘UP’ (5) key, when the ‘rSt’ message appears, press ‘SQ’
(<) . The instrument will return to the memory visualiza-
on. Press the ‘LE’ (3) key to exit his menu.
• access to the preset value to read and modify the value.
The ‘fast access’ menu is not aected by the password func-
on. This means that the conguraon menu can be password
blocked, while some congured funcons or parameters can
sll be accessible to the operator through the ‘fast access’
menu.
• Super fast access
If only a single funcon is selected for the ‘fast access’ menu,
pressing the the ‘UP’ (5) key will shortly display the funcon
name and then automacally jump to the funcon value.
While on delay mode, the instrument shows all decimal points
lightened and ashing, all alarms are deacvated, and there
is no signal acquision or communicaons control. When the
delay me is over, the instrument starts its normal funcon-
ing.
The ‘LE’ (3) key at the front of the instrument can be con-
gured to acvate several funcons. Only one funcon can
be assigned to the ‘LE’ (3) key. Eligible funcons are reset
of the counter and the alarm unlock funcon (see secon
1.13.15).
Example: an impulse counter acvates alarm 1 when reading
reaches 153.000. Automacally the instrument acvates a
reset, reading goes to ‘0’, and relay 1 is acvated to inform
that the required level has been reached. Counter remains
at 0 receives several addional impulses, related to the sys-
tem not stopping immediately. When the operator arrives,
reloads the system and presses key ‘LE’ to return the reading
to ‘0’, unlocks the alarm and restarts the system.