Page 1
Technical Specifications
CU1
FAILSAFE TIMER UNIT
TERMINAL CONNECTIONS
120
35mm DIN rail
mounting
45
73
To gain access
to switches & fuse
flip off lid with
a small screwdriver.
Access to replaceable fuse
Isolate power
before opening.
Power supply:
Relay outputs:
Maximum switched
current/voltage/load:
Internal fuse:
Mounting:
Enclosure protection:
Terminal Isolation:
Ambient temperature:
Internal switches:
LED indication:
Conformity:
110/230V AC (Switch selectable)
24V AC/DC.
2 N/O + 1 N/C. (TUV approved)
4A / 250V AC / 1000VA
2A / 30V DC / 60W
500mAT (Replaceable).
35mm DIN-rail.
IP 40 DIN 0470.
IP 20 DIN 0470.
-10°C to +55°C.
110/230V AC selector
A, B, C, D Timing range selector.
Red = Power 0n,
Red/Green LED: Red = Timing, Green = Output.
Remote indication connection terminals provided.
EN 60204, EN 292 pts 1& 2.
SUPPLY
110/230
V AC
SELECTABLE
13
23
3114
24
32A1 X1
X2
A2
R2 R1 R3
SUPPLY
24V AC/DC
TEST REMOTE INDICATIONS SAFETY
1
SAFETY
2
AUXILIARY
1 2
1 2
1 2
1 2
< 1 second to 10 seconds.
A
1 second to 39 seconds. 6 second to 5 mins 10 seconds. 48 second to 41 mins
BCD
TIMER RANGE INTERNAL SWITCH SETTING
Fully CCW
Maximum
Fully CW
Minimum
RED GREEN
+
_
The CU1 Failsafe Timer is designed to integrate in the safety control system
of automated machinery. Upon energisation the unit powers up (Red LED)
and the timer commences operation. Upon the selected time delay being
completed the Signal LED turns Green indicating that the safety outputs are
made and the auxiliary output is now "OFF".
The outputs and timer circuit are failsafe and cross monitored making the
CU1 ideal for the safe control of safety critical parts - typically guard
interlocking switches with guard locking. In this way the machine is given
time to stop before access is possible.
Time delay selection is a simple matter for a qualified person to set the DIP
switches and fine tune accordingly. In addition a replaceable plug in 500mAT
fuse is accessible behind the removable panel (isolate the power before
opening) preventing short circuits or overloads from damaging the unit.
CU1 TIMER UNIT
500mA
1 Select general range
Check time delay is set correctly
3
2 Fine tune
A2 -- X2 R2 R3 14 24 32
POWER
OUTPUT
A1 + X1 R1 O 13 23 31
MADE IN THE EC
240/
110
24V
AC/DC
240/
110
24V
AC/DC
Sicherheitstechnik
CU 1
Failsafe Timer
EN60204
BS EN 292
A Remote Indicator Box is also available which gives
visual status indication at the point of access.
R1R2R3
To CU1
REMOTE
INDICATOR BOX
38
36
69
Max (3 core)
cable size 6mm dia.
Sicherheitstechnik
CU1
REMOTE INDICATION
RED
ROT
ROUGE
GREEN
GRUN
VERT
Made in the EC
57
50
SPECIALISTS IN MACHINERY SAFETY
SPECIALISTS IN MACHINERY SAFETY
Page 2
A2 13 14
A1 R2 R1 R3
REMOTE INDICATOR
APPLICATION WITH TWO CONTACTORS AND
GUARDMASTER SOLENOID LOCKING GUARD INTERLOCK
CU1
SUPPLY
APPLICATION EXAMPLES
START
STOP
K1
K2
SUPPLY
K1
K2
SOLENOID
SAFETY
CONTACTS
SOLENOID
LOCKING
SWITCH
A1 X1 X2
START
A2 13 14
APPLICATION WITH 230V AC POWER INTERLOCKING AND
GUARDMASTER SOLENOID LOCKING GUARD INTERLOCK
CU1
STOP
M
SOLENOID
SAFETY
CONTACTS
SOLENOID
LOCKING
SWITCH
R1R2R3
Drg No: 70876 / Issue No: 0
R
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