BEKA BA577E User manual

Issue: 4
3rd July 2018
BA577E
One input
General purpose
Timer or Clock
Issue 4

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 Magnetic pick-off input
2.2.5 Voltage pulse input
2.3 Remote reset
2.4 Control outputs - optional
3. INSTALLATION
3.1 Location
3.2 EMC
3.3 Installation Procedure
3.4 Scale card
4. ACCESSORIES
4.1 Display backlight
4.2 Control outputs
4.3 Scale card
4.4 Tag information
4.5 Rear cover sealing kit
5. OPERATION AS A TIMER
5.1 Initialisation
5.2 Controls when configured as a Timer
5.3 Displays when configured as a Timer
5.4 Timer structure
5.5 Configuration as a Timer
5.5.1 Accessing configuration functions
5.5.2 Summary of Timer configuration
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 Starting & stopping the Timer:
5tAr5toP
5.5.9 Units of display: unit5
5.5.10 Set time: 5Et t
5.5.11 Repeat timing 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 Adjusting 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 grand 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 grand total from within the
configuration menu: Clr Gtot
5.5.28 Security code: CodE
5.5.29 Reset configuration to Timer
factory defaults: r5Et dEF
6. TIMER APPLICATION EXAMPLES
6.1 Measuring the time that a contact is closed
6.2 Controlling a solenoid valve
7 MAINTENANCE when configured as a Timer
7.1 Fault finding during commissioning
7.2 Fault finding after commissioning
7.3 Servicing
7.4 Routine maintenance
7.5 Guarantee
7.6 Customer comments
CONTENTS
The BA577E 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 configured as a clock
8.3 Displays when configured as a clock
8.4 Configuration as a clock
8.4.1 Accessing configuration functions
8.4.2 Summary of Clock configuration
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 synchronising 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 configuration to Clock
factory defaults: r5Et dEF
9. CLOCK CONFIGURATION EXAMPLE
9.1 Configuration procedure
10. MAINTENANCE when configured as a Clock
10.1 Fault finding during commissioning
10.2 Fault finding after commissioning
10.3 Servicing
10.4 Routine maintenance
10.5 Guarantee
10.6 Customer comments

4
1. DESCRIPTION
The BA577E is a general purpose, panel mounting
instrument with a single input that can be configured
as a Timer or as a Clock. As a Timer the BA577E is
able to measure and display the elapsed time
between external events, or control external events
via two optional factory fitted control outputs.
When configured as a Clock, the instrument can
display time in a variety of formats and the two
optional control outputs may be configured to switch
loads on and off at pre-set times.
This instruction manual is divided into sections.
Common features
2. System design
3. Installations
4. Accessories
Timer
5. Operation as a timer
6. Configuration example
7. Maintenance
Clock
8. Operation as a clock
9. Configuration example
10. Maintenance
This instruction manual supplements the
abbreviated instruction sheet supplied with each
instrument.
2. SYSTEM DESIGN
Fig 1 illustrates the basic circuit that is used for all
BA577E 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.
Fig 1 BA577E connection
2.1 Power supply
The BA577E requires a supply of 10 to 30V dc
between terminal 1 & 2 and consumes:
10mA without optional backlight
plus 22mA with optional backlight
plus 6mA when terminals 3 & 4 are linked
2.2 Sensor input
As shown in Fig 1 the BA577E Timer can be
controlled by a wide range of sensors, the BA577E
input is not used when the instrument is configured
as a Clock.
The following table shows the instrument's input
switching thresholds when configured to operate
with various sensors. For reliable operation the
BA577E input must fall below the lower threshold
and rise above the upper threshold.
Sensor Switching thresholds
Lower Upper
Voltage pulse low 1.0V 3.0V
Voltage pulse high 3.0V 10.0V
Magnetic pick-off 0 40mV peak
Proximity detector 1.2mA 2.1mA
Switch 1001000
Open collector 2k10k

5
Switch contacts, proximity detectors and open
collector sensors require energising which is
achieved by linking terminals 3 and 4 together as
shown in Fig 1.
2.2.1 Switch contact input
Any switch contact may be directly connected to
input terminals 5 & 6. The BA577E contains a
configurable debounce circuit to prevent false
triggering of the instrument. Three levels of
debounce protection are available. See section
5.5.6.
2.2.2 Open collector input
Any sensor with an open collector output such as an
opto-isolator may be directly connected to input
terminals 5 & 6. The BA577E contains a
configurable debounce circuit to prevent false
triggering. 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 sensor input, providing
the minimum operating voltage of the proximity
detector is less than 7.5V. The BA577E contains a
configurable debounce circuit to prevent false
triggering 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 configuration menu is a low level
voltage pulse input intended for use with a magnetic
pick-off sensor. The BA577E contains a
configurable debounce circuit to prevent false
triggering of the instrument. Three levels of
debounce protection are available. See section
5.5.6.
2.2.5 Voltage pulse input
Two voltage pulse input ranges are independently
selectable in the BA577E Timer configuration menu,
VoLt5 L and VoLt5 H. The BA577E contains a
configurable debounce circuit to prevent false
triggering of the instrument. Three levels of
debounce protection are available. See section
5.5.6.
2.3 Remote reset
Connecting the external reset terminals RS1 and
RS2 together will reset the BA577E total display
when configured as a Timer and synchronise the
displayed time when configured as a Clock.
Remote resetting may be accomplished by any
switch
Note: When used as a Timer the BA577E may also
be reset from the display mode by operating the
&and *push buttons simultaneously for more
than two seconds. See 5.5.19
2.4 Control outputs (optional)
Each of the two factory fitted optional control outputs
is a galvanically isolated single pole solid state
switch as shown in Fig 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
Fig 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
Fig 3 Typical control output application

6
3. INSTALLATION
3.1 Location
The BA577E has a robust glass reinforced Noryl
enclosure with a toughened glass window. The front
has IP66 ingress protection and a gasket seals the
joint between the instrument enclosure and the
panel, the rear of the instrument has IP20 ingress
protection.
The BA577E may be installed in any panel providing
that the operating temperature is between -40°C and
+70°C. At temperatures below -20°C the display
will become increasingly slow with reduced contrast
but the instrument will continue to function normally.
Fig 4 shows the overall dimensions of the instrument
together with the recommended panel cut-out
dimensions. To achieve an IP66 seal between the
instrument enclosure and the instrument panel the
smaller tolerance aperture must be used.
Although the front of the BA577E has IP66
protection it should be shielded from continuous
direct sunlight and severe weather conditions.
4.2 EMC
The BA577E complies with the requirements of the
European EMC Directive 2014/30/EU. For specified
immunity all wiring should be in screened twisted
pairs, with the screens earthed at one point.
Recommended panel cut-out
dimensions for all installations
Mandatory to achieve an IP66 seal
between instrument and panel
90 +0.5/-0.0 x 43.5 +0.5/-0.0
DIN 43700
92.0 +0.8/ -0.0 x 45 +0.6 -0.0
Support panel wiring to prevent vibration damage
Note: Optional backlight is internally powered
Fig 4 BA577E dimensions & terminals

7
3.3 Installation Procedure
a. Cut the specified aperture in the panel. To
achieve an IP66 seal between the instrument
enclosure and the instrument panel the
aperture must have the tighter tolerances
specified in Fig 4.
b. Slide the gasket over the body of the BA577E
before inserting the instrument into the panel
aperture.
c. Firstly ensure that both the panel mounting
clamps are closed by turning the knurled
screws fully anti clockwise until the two pips in
the clamp foot align with holes in the clamp
body.
d. Place a clamp in the recess on each side of the
instrument, pulling gently to slide it onto the
dovetail as shown in Fig 5. Push the knurled
screw slightly forward to engage the thread and
tighten by turning clockwise until it is just finger
tight. When the clamps are fitted ensure that
the gasket behind the front panel bezel is
correctly positioned before fully tightening the
clamps to secure the instrument. The maximum
recommended clamp tightening torque is
22cNm (1.95 lbf in) which is approximately
equivalent to finger-tight plus one half turn.
Do not over tighten.
e. Connect the panel wiring to the rear terminal
block(s) as shown in Fig 4. To simplify
installation, the terminals are removable so that
the panel wiring can be completed before the
instrument is installed. In areas subject to
vibration wiring should be secured to prevent
damage to the connectors.
Fig 5 Fitting panel mounting clamps
3.4 Scale card
The BA577E's units of measurement are shown on
a printed scale card in a window at the right 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 Fig 6. Thus the scale
card can easily be changed without removing the
BA577E from the panel or opening the instrument
enclosure.
New instruments are supplied with a printed scale
card showing 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 - see 4.3
To change a scale card, unclip the tapered end of
the flexible strip at the rear of the instrument by
gently pushing it upwards and pulling it out of the
enclosure. Peel the existing scale card from the
flexible strip and replace it with a new printed card,
which should be aligned as shown below. Do not fit
a new scale card on top of an existing card.
Install the new scale card by gently pushing the
flexible strip into the slot at the rear of the
instrument, when it reaches the internal end-stop
secure it by pushing the end of the flexible strip
downwards so that the tapered section is held by the
rear panel.
Align the self-adhesive printed scale
card onto the flexible strip and insert
the strip into the instrument as shown
below.
Fig 6 Inserting the flexible strip carrying the scale
card into slot at the rear of the instrument.

8
4. ACCESSORIES
4.1 Display backlight
The BA577E Timer or Clock can be supplied with a
factory fitted backlight that produces green
illumination enhancing display contrast and enabling
the display to be read at night or in poor lighting
conditions. The backlight is internally powered from
the instrument power supply so no additional wiring
is required, but the supply current increases as
shown below.
BA577E Timer
current
consumption
Without backlight 10mA
Additional for backlight 22mA
Addition with terminals 3 & 4 linked 6mA
_____
Total current 38mA max
BA577E Clock
current
consumption
Without backlight 10mA
Additional for backlight 22mA
_____
Total current 32mA max
4.2 Control outputs
Although 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 Scale card
The BA577E has a window on the right hand side of
the display through which a scale card showing the
units of time such as hours can be seen. New
instruments are fitted with a scale card showing 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 opening the instrument
enclosure or removing it from the panel. See
section 3.4 of this instruction manual.
Custom scale cards for applications requiring less
common units of measurement are also available.
4.4 Tag information
New instruments can be supplied with a tag 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 sealing kit
The BA577E Timer or Clock’s rear of panel ingress
protection can be increased from IP20 to IP66 with a
BA495 rear cover sealing kit. Manufactured from
316 stainless steel the cover incorporates two M20
unthreaded entries for cable glands. It allows the
BA577E 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 configured as a Timer the BA577E can
measure and display the elapsed time between
external events such as measuring and displaying
how long machinery is operating. 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 opening a valve for a predetermined
time. Again the Timer can be started and stopped
by a remote sensor, or from the front panel push
buttons.
When controlling external events the CYCLE function
enables the BA577E Timer to be configured to
repeat the timing period up to 99 times with a
configurable delay between timed periods up to 100
hours or to repeat continuously.
The BA577E may be configured to time-up from
zero to the set time 5Et t,ortotime-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 remaining time is
continuously displayed and a separate display may
be activated to show the Timer set time 5Et t.
Resetting the timer cycle can be accomplished via
the front panel push buttons or by a remote contact.
A grand total time is maintained which can be
viewed by operating the front panel push buttons. It
may be reset to zero from within the configuration
menu, or the instrument may be configured to allow
resetting from the front panel push buttons.
Fig 7 shows a simplified block diagram of the
BA577E when configured as a Timer. The input can
be configured to accept inputs from a wide variety of
sensors. When the sensor requires energising 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 following
factory fitted accessories:
Internally powered Backlight
Dual isolated Control Outputs
Thetwofactoryfittedsolidstateisolatedcontrol
outputs may be independently configured to close
and open at specified parts of the timer cycle, such
as when the timer starts or finishes.
5.1 Initialisation
Each time power is applied to a BA577E
initialisation is performed. After a short delay the
following display sequence occurs:
All segments of the display are activated
BA577E is ready to start functioning using
the configuration information stored in the
instrument's permanent memory.
Fig 7 BA577E block diagram with Timer
configuration.

10
5.2 Controls when configured as a Timer
The BA577E is controlled and configured via four
front panel push buttons. In the display mode i.e.
when the instrument is displaying 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 grand total time in hours
and tenths of an hour irrespective of
Timer configuration. If buttons are
held for longer than ten seconds the
grand total may be reset to zero if
the grand total reset sub-function
clr gtot is enabled in the LoC r5Et
configuration function. See 5.5.20
To reset the grand total to zero from
the display mode press the
)+*buttons for ten seconds
until CLr.no is displayed, using the
&or *button change the display
to CLr.YE5 and press ).
&+ *Resets the Timer to zero or to the
set time 5Et t depending on
whether the Timer is configured to
time-up or time-down when the two
buttons are operated
simultaneously for more than three
seconds. This is a configurable
function. See 5.5.19
(+ *When enabled in the configuration
menu, operating 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 configuration menu
5.3 Displays when configured as a Timer
The BA577E has two digital 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 remaining 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 timing period up to 99
times, or continuously with a
configurable delay between
periods, is enabled.
CYCLE5 disabled
The lower display shows the set
time 5ET t, or the lower display
may be disabled if not required.
See 5.5.7
CYCLE5 enabled
The lower display shows the
total number of repeat cycles
requested together with the
number of the current cycle.
Each operation may be briefly
named at it's start or periodically
throughout the cycle.
The lower display may also be
disabled if not required.
See 5.5.7
Reset Activated while elapsed time is
annunciator being reset to zero or to the set
time 5ET t.
Grand total Activated when the grand total
annunciator time is being shown on the
upper display.
Control output Show status of both optional
annunciators control outputs.

11
5.4 Timer structure
Fig 8 illustrates the Timer structure and function
shown as a state diagram. It applies when the
instrument is measuring the time between events or
is controlling external events.
The circles in Fig 8 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.g. to initiate timing the Timer is moved
from the Reset state to the Running state by a start
event. This could be an input signal or operation of
the &button. Similarly, to pause the Timer while it
is timing, 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
timing-up or 5Et t for timing-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 depending upon it's
configuration.
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 timing cycles to perform.
When the CYCLE5 function is enabled the timing
cycle can be repeated a specified number of times,
or continuously.
5.5 Configuration as a Timer
The BA577E is configured via the four front panel
push buttons. All the configuration functions are
contained in an easy to use intuitive menu that is
shown diagrammatically in Fig 9.
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 instruments are supplied configured
as requested at the time of ordering. If configuration
is not requested, the BA577E will be supplied with
default Timer configuration as shown below, but the
instrument can easily be re-configured on-site.
Function Display Default
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 grand 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
Throughout this manual front panel push buttons are
shown as &,*,(and )and legends
displayed by the instrument are shown in a seven
segment font just as they appear on the instrument
e.g. inPut and Clr Gtot.
Access to the configuration menu is obtained by
operating 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 using the &or *push button to
adjust the flashing digit and the (push button to
transfer control to the next digit. If the correct code
has been entered pressing )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 configuration functions and prompts are shown
on the upper eight digit display.
Once within the main configuration menu the
required function can be selected by scrolling
through the menu using the &or *push buttons.
The Timer configuration menu is shown
diagrammatically in Fig 9.
When returning to the display mode following
reconfiguration, 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 configuration
functions. When read in conjunction with Fig 9 it
provides a quick aid for configuring the Timer. If
more detail is required, each section of this
summary contains a reference to a full description of
the function.
Display Summary of function
FunCtion Instrument function
Defines the function of the instrument.
May be set to:
ELAP5E Timer configuration
CloC Clock configuration
All the entries in this Timer summary
assume that the BA577E is configured
as a Timer by selecting 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
Configures the Timer sensor input to
accept one of six types of input:
oP.CoL Open collector ●
VoLt5 L Voltage pulse <1 >3V
VoLt5 H Voltage pulse <3 >10V
CoiL Magnetic pick-off
Pr.dEt Proximity detector ●
ContACt Switch contact ●
●Energise input by linking terminals
3 & 4.
See section 5.5.5
dEbounCE
Defines the level of debounce applied
to the input to prevent false
functioning:
dEFAuLt
HEAVY
LiGHt
See section 5.5.6
Display Summary of function
di5P-2 Lower display
Configures 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 enabled:
Select Lower display shows
5td Set time 5et t
oFF Disables lower display.
See section 5.5.7
With CYCLE5 enabled:
Select Lower display shows
5td Cycles requested and
cycles performed with
time-down shown during
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 high Input low
ControL 2 Input low Input high
High and low inputs are specified for a
voltage input. For other types of
sensor input.
See section 5.5.8

14
Display Summary of function
unit5 Units of display
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 grand 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 controlling an external event via
the optional control outputs the
BA577E 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 cycle
Contains a sub-menu with three
sub-functions, EnbL,CYCL Cnt and
r5t dELA.
See section 5.5.11
Cycle function enable EnbL
Enables or disables the cycle5
function without changing the
parameters.
See section 5.5.12
Cycle count CYCL Cnt
Defines the number of times that the
timer cycle is repeated.
See section 5.5.13
Restart delay r5t dELA
Defines the time delay between timer
cycles.
See section 5.5.14
AC5Et t Access 5Et t and r5t dela from
display 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
Display 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 Failure
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 having completed a
single timing cycle displaying
Timer value when power was
lost. Timing resumes when
reset followed by start
instructions are received.
Pau5e Timer returns in paused state
displaying Timer value when
power was lost. Timing
resumes when start
instruction is received.
Continue Timer will continue without
any manual intervention.
See section 5.5.17
LoC r5Et Local reset
Contains two sub-functions which
when enabled allow the Timer and the
grand 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
Local total 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
Local grand total reset CLr Gtot
When on is selected the grand total,
which represents total run-time, may
be reset to zero by operating the
)and *buttons simultaneously for
more than 10 seconds in the display
mode.
Note: Once reset, the grand total can
not be recovered.
See section 5.5.20

15
Display Summary of function
oP1 Control output 1 (Optional)
Contains sub-menu with four sub-
functions, EnbL,oP1 on,oP1 oFF and
oP1 dELA.
See section 5.5.21
Control output enable EnbL
Enables or disables control output 1
without changing the parameters.
See section 5.5.22
Control output 1 on at oP1 on
Defines when the control output turns
on (closes).
See section 5.5.23
Control output 1 off at oP1 oFF
Defines when the control output turns
off (opens).
See section 5.5.24
Control output 1 delay oP1 dELA
Introduces a configurable delay
between the oP1 on condition occurring
and the control output turning on
(closing).
See section 5.5.25
oP2 Control output 2 (Optional)
Functions as control output 1.
See section 5.5.26
Display Summary of function
CLr Gtot Reset grand total to zero
This function resets the grand total,
which represents the total Timer run-
time, from within the configuration
menu when CLr YE5 is selected and
5urE is entered to confirm the
instruction.
Note: Once reset, the grand total can
not be recovered.
See section 5.5.27
CodE Security code
Defines a four digit alphanumeric code
that must be entered to gain access to
the instrument's configuration menu.
Default code 0000 disables the security
function and allows unrestricted
access to all configuration functions
when the (and )buttons are
operated simultaneously in the display
mode.
See section 5.5.28
r5Et dEF Reset to factory defaults
Resets the BA577E to the factory
default configuration shown in section
6.5 when 5urE is entered to confirm
the instruction.
See section 5.5.29

16
5.5.3 Instrument function: FunCtion
The BA577E may be configured as a Timer or as a
Clock. This section of the instruction manual
describes the Timer, for details of Clock
configuration see section 8.
To reveal the existing function of the instrument
select FunCtion from the configuration menu and
press (.IfELAP5E is displayed, the instrument is
already configured as a Timer therefore press )to
return to the FunCtion prompt in the configuration
menu. If CloC is displayed, press the *or &
button to change the setting to ELAP5E followed by
the (button which will result in a 0000 prompt
being displayed with the first digit flashing. This is a
request for the instruction to be confirmed by
entering 5urE using the &and *buttons to adjust
the flashing digit and the (button to move control
to the next digit. When 5urE has been entered,
pressing )will reconfigure the instrument to a
Timer and return the display to FunCtion in the
configuration 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 change the type
of input, select inPut in the configuration menu and
press (which will reveal the inP .tYPE prompt,
pressing (again will show the existing input type.
If set as required press )twice to return to the
configuration menu, or repeatedly press the *or
&button until the required type of input is
displayed and then press )twicetoreturntothe
configuration menu.
One of following six types of input may be selected:
Display Input type Switching
thresholds
Low High
oPCoL Open collector² 2 10kΩ
VoLt5 L Voltage pulse low¹ 1 3V
VoLt5 H Voltage pulse high¹ 3 10V
CoiL Magnetic pick-off 0 40mV
Pr .dEt Proximity detector² 1.2 2.1mA
ContACt Switch contact² 100 1000Ω
Notes:
1. Maximum voltage input +30V.
2. For sensors that require energising i.e.
proximity detectors, switch contacts and
those with open collector outputs, terminals
3 & 4 of the BA577E Timer should be linked
together.
3. For the Timer to function correctly, the input
signal must fall below the lower switching
threshold and rise above the higher
switching 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-functioning
when the input has noisy edges, such as those
resulting from a mechanical contact closing and
bouncing. 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 following table shows the minimum time that the
input signal must be continuously above the upper
input switching threshold and continuously below the
lower switching threshold to ensure that the Timer
processes the input signal. Input switching
thresholds are shown in section 5.5.5.
Debounce
level
Min input pulse width
Type of Input
Contact All others
Default 1600µs 40µs
Heavy 3200µs 350µs
Light 400µs 5µs

17
5.5.7 Lower display: di5P-2
The configuration of the lower display which has six
6mm high digits, depend upon whether the repeat
timer function CYCLE5, which can repeat the timing
period up to 99 times or continuously with a
configurable delay between periods, is enabled.
The configuration options are:
CYCLE5 disabled
The lower display shows the set time 5ET t
or the lower display may be disabled.
CYCLE5 enabled
The lower display shows the total number of
repeat cycles requested together with the
current cycle number. During the
configurable 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
throughout the cycle.
The lower display may also be disabled if
not required.
To check or change the configuration of the lower
display select di5P-2 from the configuration menu
and press (which will reveal the existing setting
which can be changed by pressing the *or &
button followed by the )button to enter the
selection and return to the configuration menu.
If the CYCLE5 function is not enabled the
following two options are available:
5td Lower display shows the Timer's set
time 5Et t, from which the BA577E will
time-up or time-down depending upon
the direction of count selected in the
uP or dn function.
oFF Lower display disabled.
If the CYCLE5 function is enabled the following
three options are available:
5td Lower display shows the number of
cycles requested together with the
current cycle number. During the
configurable 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 signal or by operation of the front panel *or
&push buttons.
To check or change the control of the Timer, select
5tAr5toP from the configuration menu and press (
which will reveal the existing setting which can be
changed by pressing the *or &button followed
by the )button to enter the selection and return to
the configuration menu. Options available are:
Voltage inputs or control from front panel
Display Start Stop
ControL 1 Input high Input low
ControL 2 Input low Input high
LoCAL & button *button
Contact and open collector inputs
Display Start Stop
ControL 1 Open Closed
ControL 2 Closed Open
Proximity detector input
Display Start Stop
ControL 1 Low current High current
ControL 2 High current Low current
5.5.9 Units of display: unit5
Defines the format of all displayed times, except the
delay time of the optional control outputs which is
shown in seconds and the grand total which is
shown in hours and tenths of an hour.
To check or change the units of display, select unit5
from the configuration menu and press (which
will reveal the existing setting. The required units
can be selected by pressing the *or &button
followed by the )button to enter the selection and
return to the configuration menu. The options
available are shown below:
Display
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 controlling an
external event via the optional control outputs the
BA577E will time-down from the set time to zero or
time-up from zero to the set time.
To check or change the set time, select 5Et t from
the configuration menu and press (which will
reveal the existing setting with the most significant
digit flashing. The flashing digit may be adjusted by
pressing the *or &button followed by the
(button to transfer control to the next digit. When
set as required, enter the selection and return to the
5Et t prompt in the configuration menu by operating
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 cycle: CYCLE5
This powerful function which allows the BA577E
timing cycle to be repeated up to 99 times or
continuously with a configurable delay between
cycles of up to 99 hours, 59 minutes & 59 seconds.
To check or adjust the repeat timing cycle, select
cycle5 from the configuration menu and press
(which will enter a sub-menu containing three
sub-functions, EnbL,CYCL Cnt and r5t dELA which
are described in the following sections.
5.5.12 Cycle function enable: EnbL
This sub-function allows the repeat timing cycle to
be enabled or disabled without altering any of the
repeat timing cycle parameters. To check or change
the function select EnbL from the repeat timing cycle
sub-menu and press (which will reveal if the
repeat cycle function is on or oFF. The setting can
be changed by pressing the &or *button
followed by the )button to return to the repeat
timing cycle sub-menu.
5.5.13 Cycle 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 change the function select cycl cnt
from the repeat timing cycle sub-menu and press (
which will reveal two digits with the most significant
flashing. The flashing digit may be adjusted by
pressing the *or &button followed by the
(button to transfer control to the next digit. When
set as required, enter the selection and return to the
cycl cnt prompt in the sub-menu by operating the
)button.
5.5.14 Restart delay: r5t dela
This sub-function defines the time delay between
repeat timing 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 delay
selected in
unit5
12 :00 :00 99 :59 :59
12 :00 99 :59
30 :00 5999 :59
30 359999
To check or change the reset delay time select
r5t dela from the repeat timing cycle sub-menu and
press (which will reveal the delay time in the
selected format with the most significant digit
flashing. The flashing digit may be adjusted by
pressing the *or &button followed by the
(button to transfer control to the next digit. When
set as required, enter the selection and return to the
r5t dela prompt in the sub-menu by operating 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
delay r5t dela from the display 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 operating
the (and *push buttons. Thus allowing an
operator to adjust these parameters without having
access to the instrument's configuration 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 change the function, select AC5Et t in
the configuration menu and press (which will
reveal the EnbL prompt, pressing (again 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 configuration 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 pressing the *or &button.
Access to 5Et t and r5t dela from the display mode
may be protected by a four digit alphanumeric
security code which must be entered to gain access.
Default security code 0000 allows unrestricted
access. With ACCd displayed, press (to enter a