SJ300 Inverter
The control logic connector board is removable for wiring convenience as shown below (first, remove two retaining screws). The small connector to the left is for serial communications.
Retaining screw locations 
| SP | SN | RP | SN |
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| H |
| O2 | AM | FM | TH | FW | 8 |
| CM1 |
| 5 | 3 | 1 | 14 | 13 | 11 | AL1 |
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L |
| O | OI | AMI | P24 | PLC | CM1 |
| 7 | 6 |
| 4 |
| 2 |
| 15 | CM2 | 12 | AL0 | AL2 |
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| Serial | Analog |
| Analog Power |
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| Logic |
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| Logic | Alarm | |||||||||||||||||||||||||||
communications | inputs |
| outputs |
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| inputs |
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| outputs |
| relay | ||||||||||||||||||||||||||||
Specifications for the logic connection terminals are in the following table:
| Terminal Name | Description | Ratings and Notes |
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| [P24] | +24V power for inputs | 24VDC supply, 100 mA max. |
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| [CM1] | +24V common | Common for 24V supply, [FW], [TH], inputs [1] to |
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| [8], and [FM]. (Note: Do not ground) |
| Monitoringand |
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| Operations | |
| [PLC] | Common for logic inputs | Common for input terminals [1] to [8], jumper to |
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| CM1 for sinking, jumper to P24 for sourcing |
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| [CM2] | Common for logic outputs | Common for output terminals [11] to [15] |
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| [1], [2], [3], [4], [5], | Intelligent (programmable) | 27VDC max. (use [P24] or an external supply refer- |
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| [6], [7], [8] | discrete logic inputs | enced to terminal [CM1]), 4.7kΩ input impedance |
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| [FW] | Forward/stop command | 27VDC max. (use [P24] or an external supply refer- |
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| enced to terminal [CM1]), 4.7kΩ input impedance |
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| [11], [12], [13], | Intelligent (programmable) | Open collector type, 50mA max. ON state current, |
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| [14], [15] | discrete logic outputs | 27 VDC maximum OFF state voltage |
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| [TH] | Thermistor input | Reference to [CM1], min. thermistor power 100mW |
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| [FM] | PWM output | 0 to 10VDC, 1.2 mA max., 50% duty cycle |
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| [AM] | Voltage analog output | 0 to 10VDC, 2 mA max. |
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| [AMI] | Current analog output |
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| [L] | Common for analog inputs | Sum of [OI], [O], and [H] currents (return) |
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| [OI] | Analog input, current | 4 to 19.6 mA range, 20 mA nominal, 100Ω input |
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| impedance |
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| [O] | Analog input, voltage | 0 to 9.6 VDC range, 10VDC nominal, 12VDC |
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| max., input impedance 10 kΩ |
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| [O2] | Analog input, voltage 2 |
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| max., input impedance 10 kΩ |
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| [H] | +10V analog reference | 10VDC nominal, 10 mA max. |
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| [AL0] | Relay common contact | Contacts |
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| 250VAC, 2A; 30VDC, 8A resistive load |
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| [AL1] | Relay contact, normally |
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| 250VAC, 0.2A; 30VDC, 0.6A inductive load |
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| closed |
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| Contacts |
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| [AL2] | Relay contact, normally | 250VAC, 1A; 30VDC 1A max. resistive load |
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| 250VAC, 0.2A; 30VDC, 0.2A max. inductive load |
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| open |
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| Min. loads: 100 VAC, 10mA; 5VDC, 100mA |
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