Fema B Series User manual

Series B . Models Bxx-RTU
Meters for Modbus RTU
Large format industrial meters for Modbus RTU. 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gurable, accepts 16 and 32 bit registers, local or
remote alarm control, ‘watchdog’ funcon, ‘bus acvity’, 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 out-
put 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
4381r03
User’s Manual
ELECTRONICS FOR INDUSTRIAL AUTOMATION
PANEL METERS . SIGNAL CONVERTERS . LARGE DISPLAYS

FEMA ELECTRÓNICA . SERIES B . Models Bxx-RTU
2
1. Series B, models Bxx-RTU
Large format industrial meters for Modbus RTU protocol
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.
Meters controlled via Modbus RTU protocol. Control of the
reading value, decimal point and alarm status, by wring to
internal registers. Standard Modbus RTU 16 bit registers for
readings from 32767 to -32767, and congurable to 32 bits
registers for readings from 999999 to -199999 (see secon
1.21.5).
Alarms can be congured for remote or local control by se-
lecng the ‘Full slave’ or ‘Process slave’ modes (see secon
1.21.2). In ‘Full slave’ mode alarms can be controlled by writ-
ing to registers or to coils (see secon 1.21.6).
Bus speed up to 38.400 bps and addresses from 1 to 247.
‘Watchdog’ funcon to control loss of communicaon with
the master, with control of error message and alarm acva-
on (see secon 1.21.4).
‘Bus acvity’ funcon for help on communicaons start-up
(see secon 1.21.12).
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 1.21.11)
• ‘On power up’ for system protecon on ‘cold’ start-up and
control of alarm status (see secon 1.21.13)
• alarms in ‘Process slave’ mode, with 1 or 2 setpoints, in-
dependent acvaon and deacvaon delays, hysteresis,
manual unlocking, ... (see secon 1.21.8)
Memory of maximum and minimum reading, password pro-
tecon, 5 brightness levels.
1.1 How to order
B24 RTU
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

FEMA ELECTRÓNICA . SERIES B . Models Bxx-RTU
3
1. Series B, models Bxx-RTU . . . . . . . . . . . . . . . . . 2
1.1 How to order . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Index . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 How to use this manual . . . . . . . . . . . . . . . . 4
1.4 Modbus RTU denions . . . . . . . . . . . . . . . . 4
1.5 Typical applicaon . . . . . . . . . . . . . . . . . . . 5
1.6 Factory conguraon . . . . . . . . . . . . . . . . . . 5
1.7 Sizes and formats . . . . . . . . . . . . . . . . . . . . 6
1.7.1 Format B24. . . . . . . . . . . . . . . . . . . . . . 6
1.7.2 Format B44. . . . . . . . . . . . . . . . . . . . . . 6
1.7.3 Format B26. . . . . . . . . . . . . . . . . . . . . . 7
1.7.4 Format B46. . . . . . . . . . . . . . . . . . . . . . 7
1.8 To access the instrument . . . . . . . . . . . . . . . . 8
1.9 Modular system . . . . . . . . . . . . . . . . . . . . . 8
1.10 Power connecons and protecve earth . . . . . . 9
1.11 Input signal connecons . . . . . . . . . . . . . . . 9
1.12 Connecons for remote keypad . . . . . . . . . . . 9
1.13 Technical specicaons . . . . . . . . . . . . . . . 10
1.14 Funcons included . . . . . . . . . . . . . . . . . 11
1.15 Messages and errors . . . . . . . . . . . . . . . . 11
1.16 Start up sequence . . . . . . . . . . . . . . . . . . 11
1.17 Registers and funcons : 16 bits ‘Process slave’ . 12
1.18 Registers and funcons : 16 bits ‘Full Slave’ . . . . 13
1.19 Registers and funcons : 32 bits ‘Process slave’ . 14
1.20 Registers and funcons : 32 bits ‘Full Slave’ . . . . 15
1.21 Conguraon . . . . . . . . . . . . . . . . . . . . 16
1.21.1 How to operate the menus . . . . . . . . . . . 16
1.21.2 Inial set-up . . . . . . . . . . . . . . . . . . . 17
1.21.3 Addresses. . . . . . . . . . . . . . . . . . . . . 18
1.21.4 ‘Watchdog’ funcon . . . . . . . . . . . . . . . 18
1.21.5 16 bits or 32 bits registers. . . . . . . . . . . . 18
1.21.6 Alarm control : registers and ‘coils’ . . . . . . . 18
1.21.7 Conguraon menu . . . . . . . . . . . . . . . 19
1.21.8 Alarms . . . . . . . . . . . . . . . . . . . . . . 20
1.21.9 Alarms conguraon menu for ‘full slave’ . . . 21
1.21.10 Alarms conguraon menu for ‘process slave’ 21
1.21.11 Fast access . . . . . . . . . . . . . . . . . . . 22
1.21.12 ‘Bus acvity’ funcon . . . . . . . . . . . . . 22
1.21.13 ‘On power up’ funcon . . . . . . . . . . . . 22
1.21.14 ‘Setpoint on bus’ parameter. . . . . . . . . . 22
1.21.15 ‘Decimal point’ parameter. . . . . . . . . . . 22
1.21.16 ‘Fast access’ conguraon menu . . . . . . . 23
1.21.17 ‘On power up’ conguraon menu . . . . . . 23
1.21.18 Setpoint on bus’ conguraon menu . . . . . 23
1.21.19 ‘Decimal point’ conguraon menu . . . . . 23
1.21.20 ‘Key LE’ conguraon menu . . . . . . . . . . 24
1.21.21 Password conguraon . . . . . . . . . . . . 24
1.21.22 Default factory conguraon . . . . . . . . . 24
1.21.23 Firmware version . . . . . . . . . . . . . . . . 24
1.21.24 Brightness conguraon . . . . . . . . . . . . 24
1.21.25 Access to the opons conguraon menu . . 25
1.22 Full conguraon menu. . . . . . . . . . . . . . . 26
1.23 Mounng. . . . . . . . . . . . . . . . . . . . . . . 28
1.24 Installaon precauons . . . . . . . . . . . . . . . 29
1.25 Warranty . . . . . . . . . . . . . . . . . . . . . . . 29
1.26 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 Red LED . . . . . . . . . . . . . . . . . . . . . . . . 34
3.3 Green LED . . . . . . . . . . . . . . . . . . . . . . . 34
1.2 Index

FEMA ELECTRÓNICA . SERIES B . Models Bxx-RTU
4
1. Idenfy the instrument format (see secon 1.7)
2. Power and signal connecons
- open the instrument (see secon 1.8)
- connect the power (see secon 1.10)
- connect the signal (see secon 1.11)
- close the instrument (see secon 1.8)
3. Congure the instrument (see secon 1.21)
- select the working mode, and the bus conguraon (see
secon 1.21.2)
- congure the protocol (see secon 1.21.7)
4. Advanced conguraon (oponal)
- congure the instrument alarms (see secon 1.21.8)
- congure the fast access (see secon 1.21.11)
- congure other funcons: ‘on power up’ (1.21.13), key
‘LE’ (1.21.20) and password (1.21.21)
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 1.9
- to congure an installed opon, access the opon con-
guraon menu (see secon 1.21.25)
- 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 1.23)
- adjust the brightness level according to your environmen-
tal needs (see secon 1.21.24)
1.3 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 1.24.
The Modbus RTU protocol is a serial communicaons proto-
col, based on RS-485 bus, with ‘master’ / ‘slave’ architecture.
Modbus RTU elements needed to understand this manual
are described below:
• ‘registers’: are memory secons inside the ‘slave’ in-
strument, where the ‘master’ reads or writes data. Reg-
isters store numerical data. Modbus works with registers
of 16 bits, which allows for numerical values from 32767
to -32767. For displays with 6 digits (display values from
999999 to -199999) registers of 32 bits are needed (see
secon 1.21.5).
• ‘coils’: are memory secons inside the ‘slave’ instrument,
where the ‘master’ reads or writes data. Coils store binary
data (‘1’ or ‘0’). Coils are typically used for alarm control
and other elements with 2 states : ‘on’ and ‘o’.
• ‘funcons’: are acons that indicate to write or read val-
ues into ‘registers’ or ‘coils’ (see Table 1).
• ‘errors’ : Modbus is a protocol with a ‘master’ / ‘slave’ ar-
chitecture and the ‘master’ will always expect a reply from
the ‘slave’. If a requested ‘funcon’, ‘register’ or ‘coil’ is not
available, the ‘slave’ will answer with an error. See secon
1.15 for a list of errors available.
1.4 Modbus RTU denions
Funcon Name Descripon
6Write single register writes on a single register
16 Write mulple regis-
ters
writes on mulple registers
3Read registers reads on mulple registers
5 Write single coil writes on a single coil
15 Write mulple coils writes on mulple coils
1 Read coils reads on mulple coils
Table 1 - Modbus RTU supported funcons

FEMA ELECTRÓNICA . SERIES B . Models Bxx-RTU
5
1.5 Typical applicaon
The typical applicaon for this models of large format indus-
trial meters if to display numerical values associated to the
producon or industrial processes. Display value is controlled
through the Modbus RTU protocol. Modbus RTU messages
are sent by the bus master, usually a PLC or a SCADA system.
The instrument can also integrate relay outputs, which
can be remotely controlled from the ‘master’ (‘Full slave’
working mode (see secon 1.21.2)) or locally controlled by
the instrument (‘Process slave’ working mode (see secon
1.21.2)).
Addional analog outputs can be also installed . See secon
2 for a list of oponal output and control modules available.
Modbus RTU
Relay 1
Relay 2
4/20mA
(isolated)
1.6 Factory conguraon
Working mode ‘Full slave’ (‘F.SLV’)
Bus
Speed 19200 bps
Format 8n1
Conguraon
Local address 1
‘Watchdog’ 10 seconds
‘On error’ ash (‘FLSh’)
Data length 16 bits
Alarm control by coil
Alarms in ‘Full slave’ mode
Alarm 1 remote (‘rMtE’)
Alarm 2 remote (‘rMtE’)
Alarm 3 remote (‘rMtE’)
Alarms in ‘Process slave’ mode
Alarms 1,2 and 3
Acve disabled (‘oFF’)
Type maximum
Setpoint 1000
Hysteresis 0 counts
Acvaon delay 0.0 seconds
Deacvaon delay 0.0 seconds
Setpoint 2 o
Inverted relay o
Locked alarms o
Tools
Fast access ( Key UP ) o
Bus acvity o
Memory of maximum o
Memory of minimum o
Alarm 1 o
Alarm 2 o
Alarm 3 o
Address o
‘On Power Up’
Delay 0 seconds
Alarm 1 o
Alarm 2 o
Alarm 3 o
Setpoint on bus o
Decimal point remote (‘rMtE’)
Key ‘LE’ no funcon (‘none’)
Password o
Brightness 3

FEMA ELECTRÓNICA . SERIES B . Models Bxx-RTU
6
1.7 Sizes and formats
1.7.1 Format B24
Size A 340 mm
Size B 135 mm
Size C 3 mm
Size D 55 mm
Size E 25 mm
Table 2 - Sizes B24
Cut-out G 322 mm (±1)
Cut-out F 117 mm (±1)
Table 3 - 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 3)
1.7.2 Format B44
Size A 542 mm
Size B 166 mm
Size C 3 mm
Size D 55 mm
Size E 25 mm
Table 4 - Sizes B44
Cut-out G 524 mm (±1)
Cut-out F 148 mm (±1)
Table 5 - Panel cut-out B44
Power
Opon 2 Opon 1
Remote keypad
Signal
CDE
A
B
F
G
Panel cut-out
(see Table 5)

FEMA ELECTRÓNICA . SERIES B . Models Bxx-RTU
7
1.7.3 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 6 - Sizes B26
Cut-out G 418 mm (±1)
Cut-out F 117 mm (±1)
Table 7 - Panel cut-out B26
F
G
Panel cut-out
(see Table 7)
1.7.4 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 8 - Sizes B46
Cut-out G 722 mm (±1)
Cut-out F 148 mm (±1)
Table 9 - Panel cut-out B46
F
G
Panel cut-out
(see Table 9)

FEMA ELECTRÓNICA . SERIES B . Models Bxx-RTU
8
1.8 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.
1.9 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-RTU
9
1.10 Power connecons and protecve earth
1. Unscrew the screws from the back cover and remove the
back cover (see secon 1.8).
2. Pass the power cable through the power cable gland (see
secon 1.7).
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 1.8).
2. Locate the input signal terminal (see secon 1.7).
3. Pass the signal cable through the signal cable gland (see
secon 1.7).
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.
1.11 Input signal connecons
B
A
2 3
GND
Input Signal
1
ARS-485 A wire
BRS-485 B wire
GND Shield
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 1.7) .
GND
SQ
UP
LE
1.12 Connecons for remote keypad

FEMA ELECTRÓNICA . SERIES B . Models Bxx-RTU
10
Format B24 Format B44 Format B26 Format B46
Number of digits 4 4 6 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 10 - Technical specicaons associated to format
Digits
number of digits 4 or 6 (see Table 10)
digit 7 segments
view angle 120º
color red or green
digit height (see Table 10)
Reading
max., min. (see Table 10)
decimal point X.X.X.X.X.X.
Protocol Modbus RTU
funcon slave within a Modbus RTU bus
speed from 38.400 bps to 600 bps
data formats 8n1, 8e1, 8o1, 8n2
addresses 1 to 247
bus terminator not included
wire secon max. 0.5 mm2
Watchdog congurable from 1 to 120 sec.
Errors communicaon loss with the
master
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 10)
fuses (see secon 1.10)
wire secon max. 2.5 mm2
1.13 Technical specicaons
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
1.23)
connecons cable gland outputs
internal plug-in screw terminals
housing material
textured iron, black painted
methacrylate front lter
weight (see Table 10)
front sizes (see secon 1.7)
panel cut-out (see secon 1.7)
depth (see secon 1.7)
Temperature
operaon from 0 to +50 ºC
storage from -20 to +70 ºC
warm-up me 15 minutes