Wiring For Control Circuit Terminals - Omron M1 Series User Manual

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Wiring for Control Circuit Terminals

Wiring for Control Circuit Terminals
• The AIC terminal (common terminal of the analog input), DIC terminal (common terminal of the ana-
log input) and DOC terminal (common terminal of the digital output) are mutually insulated from
each other.
Do not short-circuit or ground these common terminals.
In addition, do not ground these common terminals via external equipment.
When finished wiring, check the external equipment ground conditions.
• For wiring to the control circuit terminals, use twisted-pair shielded cables (recommended diameter:
2
0.75 mm ). Connect the sheathed shielded cable to each common terminal. The cable length should
be 20 m or shorter.
• Twist a cable connected to the terminal PTC (thermistor input) with a cable of the terminal AIC indi-
vidually, and separate them from other AIC common cables. Since the current flowing through the
thermistor is weak, separate the thermistor cable from main circuit cable (power cable). The thermis-
tor connection cable should be 20 m or shorter.
• To use a relay for a multifunction output terminal, connect a surge-absorbing diode in parallel with
the coil.
• The control circuit terminal block has three rows of terminals. Start wiring from the lower terminals.
Wiring from the upper terminals makes it difficult to wire the lower terminals.
Arrangement of Control Circuit Terminal Blocks
The arrangement of terminals on the control circuit terminal block is shown below.
M1 Series Standard Type User's Manual (I669)
Braking resistor
P DB
G
P (+) DB
(The temperature detection signal
can be output only by the braking resistor.)
2 Terminal DIC
1 Terminals DI1 to DI7
(External trip "EXT")
2 Design
2
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