SATEC PM135 Manual - Manual (Page 143)

‎Appendix A Technical Specifications
PM135 Powermeter Series 143
Solid State relay option (4DI/2DO only)
2 relays rated at 0.15A/250 V AC/DC, 1 contact (SPST Form A)
Galvanic isolation: 3750 VAC 1 min
Operate time: 1 ms max.
Release time: 0.25 ms max.
Update time: 1 cycle
Connector type: removable, 4 pins.
Wire size: 14 AWG (up to 1.5 mm2)
A.6 Optional Digital Inputs
4 or 12 Digital Inputs (4DI/2DO or 12DI/4DO Optional module)
Dry Contacts, internally wetted @ 24VDC
Wet contact @ 250VDC (12DI/4DO only)
Sensitivity: Open @ input resistance >100 k  , Closed @ Input
resistance < 100 
Galvanic isolation: 3750 VAC 1 min
Internal power supply: 24VDC
Scan time: 1 ms
Connector type: removable, 5 pins.
Wire size: 14 AWG (up to 1.5 mm2)
A.7 Optional Analog Outputs
4 Analog Outputs optically isolated (AO Optional module)
Ranges (upon order):
 1 mA, maximum load 5 k  (100% overload)
0-20 mA, maximum load 510 
4-20 mA, maximum load 510 
0-1 mA, maximum load 5 k  (100% overload)
Isolation: 2500 VAC 1 min
Power supply: internal
Accuracy: 0.5% FS
Update time: 1 cycle
Connector type: removable, 5 pins.
Wire size: 14 AWG (up to 1.5 mm2)
A.8 Communication Ports
COM1
RS-485 optically isolated port
Isolation: 3000 VAC 1 min
Baud rate: up to 115.2 kbps.
Supported protocols: MODBUS RTU, DNP3, SATEC ASCII, IEC 60870-5-101