3-6
Chapter 3. MOUNTING AND WIRING
Wiring
CAUTION
Be sure to turn the power supply source OFF before wiring connection.
Doing so might cause faulty operation.
The power supply circuit of this controller and the I/O circuit are not isolated each other.
Therefore, ensure that the power supply of this controller is isolated from the power supply
for external devices (insulate the power supply). If a common power supply is used for the
controller and the external devices, it might cause malfunction or faulty operation.
Be sure to check that the wiring is correct before you turn the power ON.
Incorrect wiring might cause damage or malfunction.
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Connector specifications
Part No.: MCVW1.5 / 9-STF-3.5 (Phoenix Contact Mfg.)
Wire type: Either of single core wire or stranded wire applicable.
Compatible cable: 0.08 to 1.5 mm
2
(AWG#28 to #16)
Appropriate length of stripped wire:
7 mm
7 mm
Compatible screw driver: Tip size 2.5 × 0.4 mm (a flat-head driver)
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Connector signal names
Pin number Signal name Description Remarks
1 POWER (24 V) Power+ (24 Vdc)
2 POWER GND Power supply ground
3 EV1 Event output 1 Open collector non-insulated output
4 EV2 Event output 2
5 DI1 External switch input 1 Switching input (OPEN / GND)
6 DI2 External switch input 2
7 (1) AI
(2) DA
(1) Analog setting voltage input
(2) RS-485 communications DA
(1) For the model with analog I/O function
(0 to 5 V or 1 to 5 V)
(2) For the model with RS-485 communication
function
8 (1) AO
(2) DB
(1) Analog flowrate voltage output
(2) RS-485 communications DB
9 SIGNAL GND Signal ground Input / output signal common
Signal ground is connected with power supply
ground inside this device.
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