Rockwell Automation 440R-CU1 User Manual

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

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