BEKA BA577E-SS User manual

Issue: 6
4th May 2021
BA577E-SS
Rugged one input
genera purpose
Timer or C ock
Issue 6

2
1. DESCRIPTION
2. SYSTEM DESIGN
2.1 Power supply
2.2 Sensor inputs
2.2.1 Switch contact input
2.2.2 Open collector input
2.2.3 2-wire proximity detector input
2.2.4 Ma netic pick-off input
2.2.5 Volta e input
2.3 Remote reset
2.4 Control outputs - optional
3. INSTALLATION
3.1 Location
3.2 Installation procedure
3.3 EMC
3.4 Timer or Clock earthin
3.5 Scale card
4. ACCESSORIES
4.1 Display backli ht
4.2 Control outputs
4.3 Scale card
4.4 Ta information
4.5 Rear cover sealin kit
5. OPERATION AS A TIMER
5.1 Initialisation
5.2 Controls when confi ured as a Timer
5.3 Displays when confi ured as a Timer
5.4 Timer structure
5.5 Confi uration as a Timer
5.5.1 Accessin confi uration functions
5.5.2 Summary of Timer confi uration
functions.
5.5.3 Instrument function: FunCtion
5.5.4 Input: inPut
5.5.5 Input type: inP . tYPE
5.5.6 Debounce: debounce
5.5.7 Lower display: di5P-2
5.5.8 Startin & stoppin the Timer:
5tAr5toP
5.5.9 Units of display: unit5
5.5.10 Set time: 5Et t
5.5.11 Repeat timin cycle: CYCLE5
5.5.12 Cycle function enable: EnbL
5.5.13 Cycle count: cycl cnt
5.5.14 Restart delay: r5t dela
5.5.15 Adjustin the set time 5Et t and
restart delay r5t dela from the
display mode: AC5Et t
5.5.16 Direction of count: uP or dn
5.5.17 Power fail: p fail
5.5.18 Local reset: LoC rEt
5.5.19 Local total reset: rE5Et . enbl
5.5.20 Local rand total reset: clr Gtot
5.5.21 Control output 1 (Optional): oP1
5.5.22 Control output 1 enable: EnbL
5.5.23 Control output on at: oP1 on
5.5.24 Control output off at: oP1 oFF
5.5.25 Output on delay time: oP1 dELA
5.5.26 Control output 2 (Optional): oP2
5.5.27 Reset rand total from within the
confi uration menu: Clr Gtot
5.5.28 Security code: CodE
5.5.29 Reset confi uration to Timer
factory defaults: r5Et dEF
6. TIMER APPLICATION EXAMPLES
6.1 Measurin the time that a contact is closed
6.2 Controllin a solenoid valve
7 MAINTENANCE when configured as a Timer
7.1 Fault findin durin commissionin
7.2 Fault findin after commissionin
7.3 Servicin
7.4 Routine maintenance
7.5 Guarantee
7.6 Customer comments
CONTENTS
The BA577E-SS is CE marked to show compliance with the European EMC Directive 2014/30/EU

3
8. OPERATION AS A CLOCK
8.1 Initialisation and loss of power
8.2 Controls when confi ured as a clock
8.3 Displays when confi ured as a clock
8.4 Confi ration as a clock
8.4.1 Accessin confi uration functions
8.4.2 Summary of Clock confi uration
functions.
8.4.3 Instrument function: FunCtion
8.4.4 Display format: di5PLAY
8.4.5 Set Clock display time: 5et
8.4.6 Enter synchronisin time: 5YnC t
8.4.7 Control output 1 (Optional): oP1
8.4.8 Enable Control output 1: EnbL
8.4.9 On and off times:
oP 1 : on 1; oP 1 : off 1
oP 1 : on 2; oP 1 : off 2
8.4.10 Control output 2 (Optional): oP2
8.4.11 Enable control output 2: EnbL
8.4.12 On and off times:
oP2 : on 1; oP2 : off 1
oP2 : on 2; oP2 : off 2
8.4.13 Access on & off times from display
mode: AC5P
8.4.14 Security code: CodE
8.4.15 Reset confi uration to Clock
factory defaults: r5Et dEF
9. CLOCK CONFIGURATION EXAMPLE
9.1 Confi uration procedure
10. MAINTENANCE when configured as a C ock
10.1 Fault findin durin commissionin
10.2 Fault findin after commissionin
10.3 Servicin
10.4 Routine maintenance
10.5 Guarantee
10.6 Customer comments

4
1. DESCRIPTION
The BA577E-SS is a ru ed eneral purpose, panel
mountin instrument with a sin le input that can be
confi ured as a Timer or as a Clock. As a Timer the
BA577E-SS is able to measure and display the
elapsed time between external events, or control
external events via two optional factory fitted control
outputs.
When confi ured as a Clock, the instrument can
display time in a variety of formats and the two
optional control outputs may be confi ured to switch
loads on and off at pre-set times.
This instruction manual is divided into sections.
Common features
2. System desi n
3. Installations
4. Accessories
Timer
5. Operation as a timer
6. Confi uration examples
7. Maintenance
C ock
8. Operation as a clock
9. Confi uration example
10. Maintenance
This instruction manual supplements the abbreviated
instruction sheet supplied with each instrument.
2. SYSTEM DESIGN
Fi 1 illustrates the basic circuit that is used for all
BA577E-SS Timer installations. Clock installations
are the same, except that the input terminals 5 & 6
are not used. For simplicity the optional control
outputs are described separately in section 2.4 of
this manual.
Fi 1 BA577E-SS connection
2.1 Power supp y
The BA577E-SS requires a supply of 10 to 30V dc
between terminal 1 & 2 and consumes:
10mA without optional backli ht
plus 22mA with optional backli ht
plus 6mA when terminals 3 & 4 are linked
2.2 Sensor input
As shown in Fi 1 the BA577E-SS Timer can be
controlled by a wide ran e of sensors which must
have a continuous not momentary output. The
BA577E-SS input is not used when the instrument is
confi ured as a Clock.
The followin table shows the instrument's input
switchin thresholds when confi ured to operate with
various sensors. For reliable operation the BA577E-
SS input must fall below the lower threshold and rise
above the upper threshold.
Sensor Switching thresho ds
Lower Upper
Low vo tage range 1.0V 3.0V
High vo tage range 3.0V 10.0V
Proximity detector 1.2mA 2.1mA
Switch 1001000
Open co ector 2k10k

5
Switch contacts, proximity detectors and open
collector sensors require ener isin which is
achieved by linkin terminals 3 and 4 to ether as
shown in Fi 1.
2.2.1 Switch contact input
Any switch contact may be directly connected to
input terminals 5 & 6. The BA577E-SS contains a
confi urable debounce circuit to prevent false
tri erin of the instrument. Three levels of
debounce protection are available. See section
5.5.6.
2.2.2 Open co ector input
Any sensor with an open collector output such as an
opto-isolator may be directly connected to input
terminals 5 & 6. The BA577E-SS contains a
confi urable debounce circuit to prevent false
tri erin . Three levels of debounce protection are
available. See section 5.5.6.
2.2.3 2-wire proximity detector input
Most NAMUR 2-wire proximity detectors may be
connected to the BA577E-SS sensor input, providin
the minimum operatin volta e of the proximity
detector is less than 7.5V. The BA577E-SS contains
a confi urable debounce circuit to prevent false
tri erin of the instrument. Three levels of
debounce protection are available. See section
5.5.6.
2.2.4 Magnetic pick-off input
CoiL in the input confi uration menu is a low level
input intended for use with a ma netic pick-off
sensor which is not suitable for controllin the
BA577E-SS.
2.2.5 Vo tage input
Two volta e input ran es are independently
selectable in the BA577E-SS Timer confi uration
menu, VoLt5 L and VoLt5 . The BA577E-SS
contains a confi urable debounce circuit to prevent
false tri erin of the instrument. Three levels of
debounce protection are available. See section
5.5.6.
2.3 Remote reset
Connectin the external reset terminals RS1 and
RS2 to ether will reset the BA577E-SS when
confi ured as a Timer and synchronise the displayed
time when confi ured as a Clock. Remote resettin
may be accomplished by any switch
Note: When used as a Timer the BA577E-SS may
also be reset from the display mode by operatin the
& and * push buttons simultaneously for more
than two seconds. See 5.5.19
2.4 Contro outputs (optiona )
Each of the two factory fitted optional control outputs
is a alvanically isolated sin le pole solid state
switch as shown in Fi 2. The outputs are polarised
and current will only flow in one direction. Terminals
A1 and A3 should be connected to the positive side
of the supply.
Note: Because of the series protection diode some
test meters may not detect a closed alarm output
Fi 2 Equivalent circuit of each control output
The solid state output of each alarm may be used to
switch any circuit with parameters equal or less than:
V max = 30V
I max = 200mA
Fi 3 Typical control output application

6
3. INSTALLATION
3.1 Location
The BA577E-SS has a stainless steel case with a
10mm thick tou hened lass window. The case
provides 7J and the window 4J front of panel impact
protection. The captive silicone asket, which seals
the joint between the instrument and the panel
enclosure, ensures IP66 front of panel in ress
protection. The rear of the Timer or Clock has IP20
protection.
Fi 4 shows the overall dimensions of the
BA577E-SS to ether with the recommended panel
enclosure cut-out dimensions and terminal locations.
3.2 Insta ation Procedure
a. Cut the aperture specified in Fi 4 in the panel
enclosure. Ensure that the ed es of aperture are
de-burred.
b. Inspect the Timer or Clock's captive asket and
ensure that it is not dama ed before insertin the
instrument into the panel enclosure aperture.
c. If the enclosure panel is less than 1.0mm thick, or
is non-metallic, an optional BEKA stainless steel
support plate should be slid over the rear of the
Counter before the panel clamps are fitted to
evenly distribute the clampin force and prevent
the enclosure panel bein distorted or creepin .
d. Slide a panel clamp into the two rooves at each
corner of the indicator housin with the M3 stud
protrudin throu h the hole at the rear of the
clamp. Fit the stainless steel sprin washer over
the stud and secure with the stainless steel win
nut.
e. Evenly ti hten the four clamps to secure the
instrument. The recommended minimum
ti htenin torque for each win nut is 22cNm
(1.95 lbf in).
f. Connect the panel enclosure wirin to the rear
terminal blocks. To simplify installation, the
terminals are removable so that wirin can be
completed before the instrument is installed.
Cables should be mechanically secured to ensure
terminals are not dama ed by vibration.
. Finally fit a silicone rubber push-on cap to the end
of each M3 threaded rod.
Support panel wirin to prevent vibration dama e
Note: Optional backli ht is internally powered
Fi 4 Dimensions and terminals

7
Fi 5 Installation procedure
3.3 EMC
The BA577E-SS complies with the requirements of
the European EMC Directive 2014/30/EU. For
specified immunity all wirin should be in screened
twisted pairs, with the screens earthed at one point.
Fi 6 Terminals for field wirin
3.4 Timer or C ock earthing
The BA577E-SS has an M4 earth stud on the rear
panel which should be electrically connected to the
panel enclosure in which the instrument is mounted,
or to the plant equipotential conductor.
3.5 Sca e card
The Timer or Clock’s units of measurement are
shown on a printed scale card in a window at the
ri ht hand side of the display. The scale card is
mounted on a flexible strip that is inserted into a slot
at the rear of the instrument as shown in Fi 7. Thus
the scale card can easily be chan ed without
removin the Counter from the panel or openin the
instrument enclosure.
New Timer or Clocks are supplied with a printed
scale card showin the requested units of
measurement, if this information is not supplied
when the instrument is ordered a blank card will be
fitted.
A pack of self-adhesive scale cards printed with
common units of flow measurement is available as
an accessory from BEKA associates. Custom
printed scale cards can also be supplied.
To chan e a scale card, unclip the tapered end of the
flexible strip at the rear of the instrument by ently
pushin it upwards and pullin it out of the
enclosure. Peel the existin scale card from the
flexible strip and replace it with a new printed card,
which should be ali ned as shown below. Do not fit
a new scale card on top of an existin card.
Install the new scale card by ently pushin the
flexible strip into the slot at the rear of the instrument,
when it reaches the internal end-stop secure it by
pushin the end of the flexible strip downwards so
that the tapered section is held by the rear panel.
Ali n the self-adhesive
printed scale card onto the
flexible strip and insert the
strip into the indicator as
shown below.
Fi 7 Insertin flexible strip carryin scale card into
slot at the rear of the instrument.

8
4. ACCESSORIES
4.1 Disp ay back ight
The BA577E-SS Timer or Clock can be supplied with
a factory fitted backli ht that produces reen
illumination enhancin display contrast and enablin
the display to be read at ni ht or in poor li htin
conditions. The backli ht is internally powered from
the instrument power supply so no additional wirin
is required, but the supply current increases as
shown below.
BA577E-SS Timer
current
consumption
Without backli ht 10mA
Additional for backli ht 22mA
Addition with terminals 3 & 4 linked 6mA
_____
Total current 38mA max
BA577E-SS C ock
current
consumption
Without backli ht 10mA
Additional for backli ht 22mA
_____
Total current 32mA max
4.2 Contro outputs
Althou h the dual isolated control outputs are factory
fitted options, they are described in the main body of
this instruction manual as they will be used for the
majority of applications, see section 2.4. If control
outputs are required they should be specified when
the instrument is ordered.
4.3 Sca e card
The BA577E-SS has a window on the ri ht hand
side of the display throu h which a scale card
showin the units of time such as hours can be
seen. New instruments are fitted with a scale card
showin the units of measurement specified when
the instrument was ordered, if the units are not
specified a blank scale card will be fitted. A pack of
scale cards pre-printed with common units of
measurement is available as an accessory. These
can easily be fitted on-site without openin the
instrument enclosure or removin it from the panel.
See section 3.5 of this instruction manual.
Custom scale cards for applications requirin less
common units of measurement are also available.
4.4 Tag information
New instruments can be supplied with a ta number
or application information printed onto the rear panel
adjacent to the terminals. This information is not
visible from the front of the instrument after
installation.
4.5 Rear cover sea ing kit
The BA577E-SS Timer or Clock’s rear of panel
in ress protection can be increased from IP20 to
IP66 with a BA495 rear cover sealin kit.
Manufactured from 316 stainless steel the cover
incorporates two M20 unthreaded entries for cable
lands. It allows the BA577E-SS Timer or Clock to
be installed in an open panel, or to provide additional
rear protection when installed within an enclosure.

9
5. OPERATION AS A TIMER
When confi ured as a Timer the BA577E-SS can
measure and display the elapsed time between
external events such as measurin and displayin
how lon machinery is operatin . The Timer can be
started and stopped by a remote sensor, or from the
front panel push buttons.
The addition of two optional factory fitted isolated
control outputs allows the Timer to control external
events such as openin a valve for a predetermined
time. A ain the Timer can be started and stopped by
a remote sensor, or from the front panel push
buttons.
When controllin external events the CYCLE function
enables the BA577E-SS Timer to be confi ured to
repeat the timin period up to 99 times with a
confi urable delay between timed periods up to 100
hours or to repeat continuously.
The BA577E-SS may be confi ured to time-up from
zero to the set time 5Et t, or to time-down from the
set time to zero. The set time may be entered and
displayed in hours, minutes or seconds, or a
combination of units. Elapsed or remainin time is
continuously displayed and a separate display may
be activated to show the Timer set time 5Et t.
Resettin the timer cycle can be accomplished via
the front panel push buttons or by a remote contact.
A rand total time is maintained which can be viewed
by operatin the front panel push buttons. It may be
reset to zero from within the confi uration menu, or
the instrument may be confi ured to allow resettin
from the front panel push buttons.
Fi 8 shows a simplified block dia ram of the
BA577E-SS when confi ured as a Timer. The input
can be confi ured to accept inputs from a wide
variety of sensors. When the sensor requires
ener isin to detect it's state, such as a switch
contact, open collector or a two wire proximity
detector, a link connected between terminals 3 & 4
supplies power to the sensor input.
The instrument can be supplied with the followin
factory fitted accessories:
Internally powered Backli ht
Dual isolated Control Outputs
The two factory fitted solid state isolated control
outputs may be independently confi ured to close
and open at specified parts of the timer cycle, such
as when the timer starts or finishes.
5.1 Initia isation
Each time power is applied to a BA577E-SS
initialisation is performed. After a short delay the
followin display sequence occurs:
All se ments of the display are activated
BA577E-SS is ready to start functionin
usin the confi uration information stored in
the instrument's permanent memory.
Fi 8 BA577E-SS block dia ram with Timer
confi uration.

10
5.2 Contro s when configured as a Timer
The BA577E-SS is controlled and confi ured via four
front panel push buttons. In the display mode i.e.
when the instrument is displayin time the push
button functions are:
Push Button Functions
&When local control is enabled starts
the Timer. See 5.5.8
*When local control is enabled stops
the Timer. See 5.5.8
) + *Shows the rand total time in hours
and tenths of an hour irrespective of
Timer confi uration. If buttons are
held for lon er than ten seconds the
rand total may be reset to zero if
the rand total reset sub-function
clr gtot is enabled in the LoC r5Et
confi uration function. See 5.5.20
To reset the rand total to zero from
the display mode press the )
+ * buttons for ten seconds until
CLr. no is displayed, usin the & or
* button chan e the display to CLr.
YE5 and press ).
& + * Resets the Timer to zero or to the
set time 5Et t dependin on
whether the Timer is confi ured to
time-up or time-down when the two
buttons are operated
simultaneously for more than three
seconds. This is a confi urable
function. See 5.5.19
( + *When enabled in the confi uration
menu, operatin these two buttons
simultaneously provides direct
access to the set time 5Et t and
allows adjustment when the timer is
in the display mode. See 5.5.15
( + &Shows in succession, firmware
version number, instrument function
elap5e and any output accessories
that are fitted:
-A Dual Control Outputs
( + )Access to confi uration menu
5.3 Disp ays when configured as a Timer
The BA577E-SS has two di ital displays and
associated annunciators as shown on front cover of
this manual.
Elapsed time The upper display shows the
elapsed time since the Timer
was started when timing-up from
zero and the remainin time
when timing-down from the set
time. The display may be
formatted as hh:mm:ss; hh:mm;
mm:ss or ss.
Lower display The display options available on
the lower display depend on
whether the Timer repeat cycle
function CYCLE5, which can
repeat the timin period up to 99
times, or continuously with a
confi urable delay between
periods, is enabled.
CYCLE5 disab ed
The lower display shows the set
time 5ET t, or the lower display
may be disabled if not required.
See 5.5.7
CYCLE5 enab ed
The lower display shows the
total number of repeat cycles
requested to ether with the
number of the current cycle.
Each operation may be briefly
named at it's start or periodically
throu hout the cycle.
The lower display may also be
disabled if not required.
See 5.5.7
Reset Activated while elapsed time is
annunciator bein reset to zero or to the set
time 5ET t.
Grand total Activated when the rand total
annunciator time is bein shown on the upper
display.
Control output Show status of both optional
annunciators control outputs.

11
5.4 Timer structure
Fi 9 illustrates the Timer structure and function as a
state dia ram. It applies when the instrument is
measurin the time between events or is controllin
external events.
The circles in Fi 9 represent the five Timer states,
Reset, Running, Restart-delay, Paused and
Complete. The lines between the circles represent
the event required to move the Timer between
states. e. . to initiate timin the Timer is moved
from the Reset state to the Running state by a start
event. This could be an input si nal or operation of
the & button. Similarly, to pause the Timer while it
is timin , the Timer must be moved from the
Running state to the Pause state by a stop event
which could be an input or operation of the *
button.
Reset
In this state the Timer is readied for operation.
The Timer is stopped and loaded with zero for
timin -up or 5Et t for timin -down.
Running
Entered by a start event from the Reset or
Paused states. The Timer times-up to 5et t
or times-down to zero dependin upon it's
confi uration.
Pause
Entered by a stop event from Running or
Restart-delay. Timer is stopped, a start event
returns the timer to it's previous state.
Restart-delay
Entered automatically from Running. At the
end of the delay time automatically returns to
Running.
Complete
Entered automatically from Running when
there are no more timin cycles to perform.
When the CYCLE5 function is enabled the timin cycle
can be repeated a specified number of times, or
continuously.
5.5 Configuration as a Timer
The BA577E-SS is confi ured via the four front panel
push buttons. All the confi uration functions are
contained in an easy to use intuitive menu that is
shown dia rammatically in Fi 10.
Each menu function is summarised in section 5.5.2
of this manual and each summary includes a
reference to more detailed information.
All new BA577E-SS instruments are supplied
confi ured as requested at the time of orderin . If
confi uration is not requested, the BA577E-SS will
be supplied with default Timer confi uration as
shown below, but the instrument can easily be re-
confi ured on-site.
Function Disp ay Defau t
Access code CodE 0000
Function FunCtion ELAP5E
Input inPut oP . CoL
Debounce dEbounCE dEFAuLt
Display 2 di5P-2 5td
Start stop 5tAr5toP LoCAL
Units unit5 12 : 00 : 00
Set time 5Et t 00 : 00 : 00
Enable repeat cycle CYCLE5 oFF
Access set time from AC5Et t oFF
display mode.
Direction of count uP or dn dn
Recovery from power p-fail idle
supply failure.
Local total reset t-rE5Et on
Local rand total reset Gt-rE5Et oFF
External reset E-r5et 5td
Enable control output 1 *EnbL oFF
Enable control output 2 *EnbL oFF
* Optional output

12
5.5.1 Accessing configuration functions
Throu hout this manual front panel push buttons are
shown as &, *, ( and ) and le ends displayed
by the instrument are shown in a seven se ment font
just as they appear on the instrument e. . inPut
and Clr Gtot.
Access to the confi uration menu is obtained by
operatin the ( and ) push buttons
simultaneously. If the instrument is not protected by
an access security code the first parameter
FunCtion will be displayed. If a security code other
than the default code 0000 has already been
entered, the instrument will display CodE. Press
( to clear this prompt and enter the security code
for the instrument usin the & or * push button to
adjust the flashin di it and the ( push button to
transfer control to the next di it. If the correct code
has been entered pressin ) will cause the first
parameter FunCtion to be displayed. If an incorrect
code is entered, or a push button is not operated
within ten seconds, the instrument will automatically
return to the display mode.
All confi uration functions and prompts are shown on
the upper ei ht di it display.
Once within the main confi uration menu the
required function can be selected by scrollin
throu h the menu usin the & or * push buttons.
The Timer confi uration menu is shown
dia rammatically in Fi 10.
When returnin to the display mode followin
reconfi uration, the Timer will display dAtA followed
by 5AVE while the new information is stored in
permanent memory.

13
5.5.2 Summary of Timer configuration
functions
This section summarises all the Timer confi uration
functions. When read in conjunction with Fi 10 it
provides a quick aid for confi urin the Timer. If
more detail is required, each section of this summary
contains a reference to a full description of the
function.
Disp ay Summary of function
FunCtion Instrument function
Defines the function of the instrument.
May be set to:
ELAP5E Timer confi uration
CloC Clock confi uration
All the entries in this Timer summary
assume that the BA577E-SS is
confi ured as a Timer by selectin
ELAP5E.
See section 5.5.3
inPut Configuration of Input
Contains a sub-menu with two sub-
functions:
inP . tYPE Selects input sensor type
dEbounCE Defines input debounce
See section 5.5.4
inP . tYPE
Confi ures the Timer sensor input to
accept one of six types of input:
oP.CoL Open collector ●
VoLt5 L Volta e <1 >3V
VoLt5 Volta e <3 >10V
CoiL Ma netic pick-off
Pr.dEt Proximity detector ●
ContACt Switch contact ●
● Ener ise input by linkin terminals
3 & 4.
See section 5.5.5
dEbounCE
Defines the level of debounce applied
to the input to prevent false functionin :
dEFAuLt
EAVY
LiG t
See section 5.5.6
Disp ay Summary of function
di5P-2 Lower disp ay
Confi ures the lower display to show
set time 5Et t or, when the CYCLE5
repeat function is activated, the restart
delay count-down plus the cycle count
number.
With CYCLE5 not enab ed:
Se ect Lower disp ay shows
5td Set time 5et t
oFF Disables lower display.
See section 5.5.7
With CYCLE5 enab ed:
Se ect Lower disp ay shows
5td Cycles requested and
cycles performed with
time-down shown durin
requested delay period.
Brief notification of timer
status i.e. CYCLE or
dELAY at start of each
period.
LAbEL Exactly as 5td but with
periodic notification of
timer status i.e. CYCLE or
dELAY.
oFF Disables lower display.
See section 5.5.7
5tAr5toP Starting and stopping the timer
Defines how the Timer is started and
stopped.
Start Stop
LoCAL & button * button
ControL 1 Input hi h Input low
ControL 2 Input low Input hi h
Hi h and low continuous inputs are
specified for a volta e input. For other
types of sensor input.
See section 5.5.8

14
Disp ay Summary of function
unit5 Units of disp ay
Selects displayed units.
12 : 00 : 00 Hours, minutes & seconds
12 : 00 Hours & minutes *
30 : 00 Minutes & seconds
30 Seconds
Excludes delay of optional control
outputs which is always shown in
seconds and the rand total which is
always shown in hours.
*Only available if 5et t and r5t dELA ,
if already entered, specify zero
seconds or seconds which are exactly
divisible by sixty.
See section 5.5.9
5Et t Set time
When controllin an external event via
the optional control outputs the
BA577E-SS will time-down from the set
time to zero or time-up from zero to the
set time.
Note: Timer will only start if a non zero
value is entered for set time 5et t.
See section 5.5.10
CYCLE5 Repeat timing cyc e
Contains a sub-menu with three sub-
functions, EnbL, CYCL Cnt and r5t
dELA.
See section 5.5.11
Cyc e function enab e EnbL
Enables or disables the cycle5
function without chan in the
parameters.
See section 5.5.12
Cyc e count CYCL Cnt
Defines the number of times that the
timer cycle is repeated.
See section 5.5.13
Restart de ay r5t dELA
Defines the time delay between timer
cycles.
See section 5.5.14
AC5Et t Access 5Et t and r5t dela from
disp ay mode.
Enables 5Et t and r5t dela to be
adjusted from the display mode. Also
contains a sub-function ACCd which
defines a separate code to protect
access from the display mode to 5Et t
and r5t dela .
See section 5.5.15
Disp ay Summary of function
uP or dn Direction of count
Defines whether the Timer times-down
from 5Et t' to zero or times-up from
zero to the set time 5Et t.
See section 5.5.16
P-FAiL Power Fai ure
Defines how the Timer functions when
power is restored after a power failure.
Contains three sub-functions idle,
Pau5E and continue.
idle Timer returns in stopped state
as if havin completed a
sin le timin cycle displayin
Timer value when power was
lost. Timin resumes when
reset followed by start
instructions are received.
Pau5e Timer returns in paused state
displayin Timer value when
power was lost. Timin
resumes when start
instruction is received.
Continue Timer will continue without
any manual intervention.
See section 5.5.17
LoC r5Et Loca reset
Contains two sub-functions which when
enabled allow the Timer and the rand
total, which represents total Timer run-
time, to be reset to zero via the front
panel push buttons while the Timer is in
the display mode.
See section 5.5.18
Loca tota reset r5Et.EnbL
When on is selected, Timer is reset to
zero, or 5et t if timing-down, when the
& and * buttons are operated
simultaneously for more than three
seconds in the display mode.
See section 5.5.19
Loca grand tota reset CLr Gtot
When on is selected the rand total,
which represents total run-time, may be
reset to zero by operatin the )
and * buttons simultaneously for
more than 10 seconds in the display
mode.
Note: Once reset, the rand total can
not be recovered.
See section 5.5.20

15
Disp ay Summary of function
oP1 Contro output 1 (Optiona )
Contains sub-menu with four sub-
functions, EnbL, oP1 on, oP1 oFF and
oP1 dELA.
See section 5.5.21
Contro output enab e EnbL
Enables or disables control output 1
without chan in the parameters.
See section 5.5.22
Contro output 1 on at oP1 on
Defines when the control output turns
on (closes).
See section 5.5.23
Contro output 1 off at oP1 oFF
Defines when the control output turns
off (opens).
See section 5.5.24
Contro output 1 de ay oP1 dELA
Introduces a confi urable delay
between the oP1 on condition occurrin
and the control output turnin on
(closin ).
See section 5.5.25
oP2 Contro output 2 (Optiona )
Functions as control output 1.
See section 5.5.26
Disp ay Summary of function
CLr Gtot Resets grand tota to zero
This function resets the rand total,
which represents the total Timer run-
time, from within the confi uration
menu when CLr YE5 is selected and
5urE is entered to confirm the
instruction.
Note: Once reset, the rand total can
not be recovered.
See section 5.5.27
CodE Security code
Defines a four di it alphanumeric code
that must be entered to ain access to
the instrument's confi uration menu.
Default code 0000 disables the security
function and allows unrestricted access
to all confi uration functions when the
( and ) buttons are operated
simultaneously in the display mode.
See section 5.5.28
r5Et dEF Reset to factory defau ts
Resets the BA577E-SS to the factory
default confi uration shown in section
5.5 when 5urE is entered to confirm the
instruction.
See section 5.5.29

16
5.5.3 Instrument function: FunCtion
The BA577E-SS may be confi ured as a Timer or as
a Clock. This section of the instruction manual
describes the Timer, for details of Clock confi uration
see section 8.
To reveal the existin function of the instrument
select FunCtion from the confi uration menu and
press (. If ELAP5E is displayed, the instrument is
already confi ured as a Timer therefore press ) to
return to the FunCtion prompt in the confi uration
menu. If CloC is displayed, press the * or &
button to chan e the settin to ELAP5E followed by
the ( button which will result in a 0000 prompt
bein displayed with the first di it flashin . This is a
request for the instruction to be confirmed by
enterin 5urE usin the & and * buttons to adjust
the flashin di it and the ( button to move control
to the next di it. When 5urE has been entered,
pressin ) will reconfi ure the instrument to a
Timer and return the display to FunCtion in the
confi uration menu.
5.5.4 Input: inPut
The inPut function contains two sub-functions
inP . tYPE which defines the type of sensor that may
be connected to the input and dEbounCE which adjust
the amount of input noise rejection.
5.5.5 Input type: inP . tYPE
inP . tYPE is a sub-menu in the inPut function which
defines the type of input sensor that may be
connected to the input. To check or chan e the type
of input, select inPut in the confi uration menu and
press ( which will reveal the inP . tYPE prompt,
pressin ( a ain will show the existin input type.
If set as required press ) twice to return to the
confi uration menu, or repeatedly press the * or
& button until the required type of input is displayed
and then press ) twice to return to the
confi uration menu.
One of followin six types of input may be selected:
Disp ay Input type Switching
thresho ds
Low High
oPCoL Open collector² 2 10kΩ
VoLt5 L Volta e ran e low¹ 1 3V
VoLt5 Volta e ran e hi h¹ 3 10V
Pr . dEt Proximity detector² 1.2 2.1mA
ContACt Switch contact² 100 1000Ω
Notes:
1. Maximum volta e input +30V.
2. For sensors that require ener isin i.e.
proximity detectors, switch contacts and
those with open collector outputs, terminals
3 & 4 of the BA577E-SS Timer should be
linked to ether.
3. For the Timer to function correctly, the input
si nal must fall below the lower switchin
threshold and rise above the hi her
switchin threshold for the times shown in
the debounce section 5.5.6 below.
5.5.6 Debounce: dEbouncE
dEbouncE is an adjustable sub-menu in the inPut
function which prevents the Timer mis-functionin
when the input has noisy ed es, such as those
resultin from a mechanical contact closin and
bouncin . Three levels of protection may be
selected and the amount of debounce applied
depends upon the type of Timer input that has been
selected in the inP . tYPE function.
The followin table shows the minimum time that the
input si nal must be continuously above the upper
input switchin threshold and continuously below the
lower switchin threshold to ensure that the Timer
processes the input si nal. Input switchin
thresholds are shown in section 5.5.5.
Debounce
eve
Min continuous input
Type of Input
Contact A others
Defau t 1600µs 40µs
Heavy 3200µs 350µs
Light 400µs 5µs

17
5.5.7 Lower disp ay: di5P-2
The confi uration of the lower display which has six
6mm hi h di its, depend upon whether the repeat
timer function CYCLE5, which can repeat the timin
period up to 99 times or continuously with a
confi urable delay between periods, is enabled. The
confi uration options are:
CYCLE5 disab ed
The lower display shows the set time 5ET t
or the lower display may be disabled.
CYCLE5 enab ed
The lower display shows the total number of
repeat cycles requested to ether with the
current cycle number. Durin the
confi urable delay between cycles the
display times-down from the requested
delay time to zero. Each operation may be
briefly named at it's start or periodically
throu hout the cycle.
The lower display may also be disabled if
not required.
To check or chan e the confi uration of the lower
display select di5P-2 from the confi uration menu
and press ( which will reveal the existin settin
which can be chan ed by pressin the * or &
button followed by the ) button to enter the
selection and return to the confi uration menu.
If the CYCLE5 function is not enab ed the
fo owing two options are avai ab e:
5td Lower display shows the Timer's set
time 5Et t, from which the BA577E-SS
will time-up or time-down dependin
upon the direction of count selected in
the uP or dn function.
oFF Lower display disabled.
If the CYCLE5 function is enab ed the fo owing
three options are avai ab e:
5td Lower display shows the number of
cycles requested to ether with the
current cycle number. Durin the
confi urable delay period the display
times-down from the requested delay to
zero. A brief notification of timer status
i.e. CYCLE or dELAY is shown at start of
each period.
02 - 11
Current Number of cycles
cycle requested, not shown
number when cycle is
continuously repeated.
LabEL Exactly the same as 5td, but timer
status i.e. CYCLE or dELAY is shown
periodically.
oFF Lower display disabled.
5.5.8 Starting & stopping the Timer: 5tAr5toP
The Timer may be started and stopped by a sensor
input si nal or by operation of the front panel * or
& push buttons.
To check or chan e the control of the Timer, select
5tAr5toP from the confi uration menu and press (
which will reveal the existin settin which can be
chan ed by pressin the * or & button followed
by the ) button to enter the selection and return to
the confi uration menu. Options available are:
Vo tage inputs or contro from front pane
Disp ay Start Stop
ControL 1 Input hi h Input low
ControL 2 Input low Input hi h
LoCAL & button * button
Contact and open co ector inputs
Disp ay Start Stop
ControL 1 Open Closed
ControL 2 Closed Open
Proximity detector input
Disp ay Start Stop
ControL 1 Low current Hi h current
ControL 2 Hi h current Low current
5.5.9 Units of disp ay: unit5
Defines the format of all displayed times, except the
delay time of the optional control outputs which is
shown in seconds and the rand total which is
shown in hours and tenths of an hour.
To check or chan e the units of display, select unit5
from the confi uration menu and press ( which will
reveal the existin settin . The required units can be
selected by pressin the * or & button followed
by the ) button to enter the selection and return to
the confi uration menu. The options available are
shown below:
Disp ay
12 : 00 : 00 Hours, minutes & seconds
12 : 00 Hours & minutes*
30 : 00 Minutes & seconds
30 Seconds
* Only available when time in seconds specified in
any Timer function is zero or divisible by 60.
The Timer's maximum elapsed time in any format is
equivalent to 99 hours, 59 minutes & 59 seconds.

18

19

20
5.5.10 Set time: 5Et t
This is the Timer's setpoint. When controllin an
external event via the optional control outputs the
BA577E-SS will time-down from the set time to zero
or time-up from zero to the set time.
To check or chan e the set time, select 5Et t from
the confi uration menu and press ( which will
reveal the existin settin with the most si nificant
di it flashin . The flashin di it may be adjusted by
pressin the * or & button followed by the
( button to transfer control to the next di it. When
set as required, enter the selection and return to the
5Et t prompt in the confi uration menu by operatin
the ) button.
Note: If 5Et t is zero the Timer will not function
when an external start input is received or the &
button is operated.
5.5.11 Repeat timing cyc e: CYCLE5
This powerful function which allows the BA577E-SS
timin cycle to be repeated up to 99 times or
continuously with a confi urable delay between
cycles of up to 99 hours, 59 minutes & 59 seconds.
To check or adjust the repeat timin cycle, select
cycle5 from the confi uration menu and press
( which will enter a sub-menu containin three
sub-functions, EnbL, CYCL Cnt and r5t dELA which
are described in the followin sections.
5.5.12 Cyc e function enab e: EnbL
This sub-function allows the repeat timin cycle to be
enabled or disabled without alterin any of the repeat
timin cycle parameters. To check or chan e the
function select EnbL from the repeat timin cycle
sub-menu and press ( which will reveal if the
repeat cycle function is on or oFF. The settin can
be chan ed by pressin the & or * button
followed by the ) button to return to the repeat
timin cycle sub-menu.
5.5.13 Cyc e count: cycl cnt
This sub-function defines the number of times that
the timer cycle is repeated. It may be set to any
number between 1 and 99, or to 00 for continuous
repetition.
To check or chan e the function select cycl cnt
from the repeat timin cycle sub-menu and press (
which will reveal two di its with the most si nificant
flashin . The flashin di it may be adjusted by
pressin the * or & button followed by the
( button to transfer control to the next di it. When
set as required, enter the selection and return to the
cycl cnt prompt in the sub-menu by operatin the
) button.
5.5.14 Restart de ay: r5t dela
This sub-function defines the time delay between
repeat timin periods. It is shown in the format
selected in the units function and may be set to any
time between zero and the maximum time allowed in
the selected format.
Time format Maximum de ay
se ected in
unit5
12 : 00 : 00 99 : 59 : 59
12 : 00 99 : 59
30 : 00 5999 : 59
30 359999
To check or chan e the reset delay time select
r5t dela from the repeat timin cycle sub-menu and
press ( which will reveal the delay time in the
selected format with the most si nificant di it
flashin . The flashin di it may be adjusted by
pressin the * or & button followed by the
( button to transfer control to the next di it. When
set as required, enter the selection and return to the
r5t dela prompt in the sub-menu by operatin the
) button.
Can also be adjusted from the Timer display mode,
see 5.5.15
5.5.15 Adjusting the set time 5Et t and restart
de ay r5t dela from the disp ay mode:
AC5Et t
When this function is enabled the Timer's set time
5Et t and restart delay r5t dela can be adjusted
from the display mode by simultaneously operatin
the ( and * push buttons. Thus allowin an
operator to adjust these parameters without havin
access to the instrument's confi uration menu. The
function contains two sub-functions, EnbL which
activates the function and ACCd which defines a
separate code for access to 5Et t with the Timer in
the display mode.
To check or chan e the function, select AC5Et t in
the confi uration menu and press ( which will
reveal the EnbL prompt, pressin ( a ain will show
if the function is on or oFF. If adjustment of the set
time from the display mode is not required press the
* or & button to select off and then press )
twice to return to the confi uration menu. If the
function is required, select on and press ) to return
to the EnbL prompt from which ACCd, which allows a
separate access code to be entered, can be selected
by pressin the * or & button.
Access to 5Et t and r5t dela from the display mode
may be protected by a four di it alphanumeric
security code which must be entered to ain access.
Default security code 0000 allows unrestricted
access. With ACCd displayed, press ( to enter a