Rockwell Automation 440F Safedge Pressure Sensitive Safety Edge System - Manual (Page 14)

4.0 ELECTRICAL CONNECTIONS - Safedge control unit
440F-C251P (Surface Mounted)
440F-C251D (Din Rail Mounted)
A1 + Z2 MC 13 23 31
A2 -- Z1 MC 14 24 32
4.3
4.1 4.2 4.7
4.6
4.5 4.4
SUPPLY
FUSE
500mA
110V
230V
STOP (RED)
OPEN (YELLOW)
RUN (GREEN)
4.1
SUPPLY FUSE
500mA SAFETY FUSES
2A
4.2
L
110V
230V
N ve ve
+ --
31 32 13 14 23 24
4.3 4.4 4.5
4.6 4.7
STOP
RED
OPEN
YELLOW
LED INDICATION
RUN
GREEN
Z1 Z2 MC MC
CONTROL UNIT INSTALLATION AND WIRING - (Follow steps 4.1 to 4.7 for correct installation)
IMPORTANT: Wiring must be in accordance with the National Electric Code and applicable local codes
and ordinances
4.1 Mains selector switch
If using a 110V AC or a 230V AC supply, the voltage selector switch should be set as appropriate
before turning the power on. The unit is set to 230V AC when manufactured.
4.2 Mains input terminal LN (A1, A2, )
If a 110V AC or 230V AC supply is used it should be wired, together with a protective earth
(ground) to the terminals shown. The size of the protective earth (ground) wire should be at least
equal to that of the supply wire. Also check (4.1). If these terminals are used, ignore (4.3).
4.3 24V AC/DC input terminal +ve and -ve
If a 24V AC/DC supply is being used, the supply should be connected to these terminals,
ensuring that the correct polarity is observed. Do not make any connections to the terminals
of (4.2). Where a 24V AC or DC supply is used, it must be isolated from the mains supply in
accordance with international electrical safety pratice (IEC 364-4-41). One pole should be
earthed. For 24V DC the negative pole should be earthed (grounded). With 24V AC the earthed
(grounded) pole of the power supply should be connected to the -ve terminal.
4.4 Aux Output terminal 31 and 32
This terminal provides an auxiliary normally closed contact (i.e. closed when the green “Run”
light is off) which is suitable for indication or for alarm devices. As this is an auxiliary, it must not
be connected to the safety circuit.
4.5 Safety Output terminal 13, 14, 23 and 24
These are volt free contacts for connection to the machine safety circuits i.e, they are connected
in series with the machine contactor control circuit. (Max. rating 2A at 250V AC). Both of these
safety circuits are internally fused but must also be externally protected with a 2A quick acting fuse.
If one contactor is being used, terminals 13 and 24 are required and terminals 14 and 23 should
be jumpered together. For 2 contactors with 2 independent control circuits (i.e. a dual channel
system), use 13-14 for one contactor and 23-24 for the other. For 2 contactors, also see (5.3).
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