Omron G3PW - MANUAL 2 User Manual page 44

Wiring
Terminal Names
Wiring Inputs for External
Settings
Alarm Outputs
• Use shielded twisted-pair wires for RS-485 communications wires. A
maximum of 500 m total of wiring can be used.
A screwless clamp terminal block is shown as an example.
+
EJ1 Modular Temperature
Controller, CJ-series Serial
Communications Unit, etc.
−
Load
Automatic
Load
Manual
Note A terminator must be connected at each end of the RS-485 trans-
mission path. The terminators must be at least 54 Ω combined.
■ Wiring to Adjust the Main
Setting
Use a G32X-V2K
Variable Resistor
to adjust the main
setting.
1
2
3
1
2
3
4
5
6
Load 7. Alarm output 1 (+)
8. Alarm output 1 (−)
9. Alarm output 2 (+)
Load
10. Alarm output 2 (−)
11
12
13
14
+
Multi-drop (See note.)
−
Max. of 31 nodes
1. RS-485 (+)
2. RS-485 (−)
3. Main setting
4. Main setting COM
5. Duty setting
6. Duty setting COM
7. Alarm output 1 (+)
8. Alarm output 1 (−)
9. Alarm output 2 (+)
10. Alarm output 2 (−)
11. Event input (+)
12. Event input (−)
13. Reset input (+)
14. Reset input (−)
For standard models, 1 and 2
are not used.
■ Wiring to Adjust the Duty Setting
Use a G32X-V2K
Variable Resistor to
adjust the duty setting.
1
3. Main setting
4. Main setting
COM
Output status
Number of out-
puts
Maximum oper-
ating voltage
Maximum load
current
Maximum resid-
ual voltage
Maximum leak-
age current
Section 3-3
2
5. Duty setting
3
6. Duty setting COM
Open collector
2
30 VDC
50 mA
1.5 V
0.4 mA
29