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4-12
Chapter 4. WIRING
Handling Precautions
• When switching small currents, connect a bleeder resistor to allow
current flow of the minimum relay switching input (100 mA min.).
• Current output and voltage output can be selected by setup data
C 77.
Voltage output is reliant on an internal fixed-current circuit.
Set the current value in the setup data so that the optimum voltage is
obtained matched to the conditions of the SSR in use and the load.
Factory setting: general-purpose SSR voltage value.
• Internal connection of MV1 (CH1 MV) and MV2 (CH2 MV), and output 1
and output 2 can be selected in setup data
C44.
• 4 to 20 mA dc and 0 to 20 mA dc can be selected in setup data
C90.
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14
13
31
11
12
16
Load
Power supply
Output 1 (MV1 heat output or MV2 heat output)
Contact rating, resistive load
5 A (30 Vdc/120 Vac)
4 A (240 Vac)
Minimum switching current: 100 mA
Output 2 (MV1 cool output or MV2 cool output)
Contact rating, resistive load
5 A (30 Vdc/120 Vac)
4 A (240 Vac)
Minimum switching current: 100mA
18
17
19
Load (SSR)
Load
Power supply
Output 3 (MV2 or MV1)
• Current output
4 to 20 mA dc/0 to 20 mA dc
Resistive load 600
Ω
max.
• Voltage output
2 to 22 mA dc
With current adjustment function
(setup data
C80)
■
Heat/cool output (3D)
Connect as follows: