Mitsubishi Electric MCC-50A Installation And Instruction Manual page 31

9-1-2. External signal output function
An ON signal is output when one or more units are in operation, and an Error signal is output when one or more
units are in error. (Operation status (On/Error) of the units that are connected to each MCC-50 will be output.)
(1) Recommended circuit
Relay-driven circuit
CN5
9
4
Brown
3
Black
2
Green
1
Max.
10 m (32 ft)
MCC-50
Note
● The relays, lamps, DC power supply, diodes, and extension cables are not supplied.
● The total length of the lead wire and extension cable should not exceed 10 m (32 ft). (Use an extension cable of 0.3 mm
thicker.)
● Each element will turn on during operation and when an error occurs.
WT09836X01
External power supply
Diode *2
Z2
Z1
Z1
Z2
L1: ON indicator
L2: Error indicator
Use relays Z1 and Z2 that meet the following
specifications.
*1
Operation coil
L1
Rated voltage: 12 or 24 VDC
Power consumption: Max. 0.9 W
L2
*1 Select an external power supply suitable for the relays used. (12 or
24 VDC)
Connect the external power supply in the correct polarity to input
and output the signals.
Connect ① (shown in the figure at left) to the negative side.
*2 Use a diode at both ends of the relay coils.
Important
● Be sure to use an external power supply (12 or 24 VDC)
to avoid malfunctions.
● Connect the external power supply in the correct
polarity to avoid malfunctions.
● Do not connect the external power supply without
relays being connected to the device (no load).
31
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or