Nor-Cal SDC15 Controller - Manual (Page 211)

13-3
Chapter 13. SPECIFICATIONS
● Current transformer input
Number of
input points:
2 points
Input object: Current transformer with 100 to 4,000 turns (availability is by 100-turn
units)
Optional unit Model No.: QN206A (800 turns, hole diameter: 5.8 mm)
Optional unit Model No.: QN212A (800 turns, hole diameter: 12mm)
Current measurement
lower limit:
0.4Aac (800 turns, 1 time)
Formula; Number of turns ÷ (2000 x number of power wire loops)
Current measurement
upper limit:
50.0Aac (800 turns, 1 time)
Formula; Number of turns ÷ (16 x number of power wire loops)
Allowable measured
current:
70.0Aac (800 turns, 1 time)
Formula; Number of turns ÷ (16 x number of power wire loops) x 1.4
Display range lower
limit:
0.0Aac
Display range upper
limit:
70.0Aac (800 turns, 1 time)
Formula; Number of turns ÷ (16 x number of power wire loops) x 1.4
Display accuracy: ±5%FS
Display resolution: 0.1Aac
● Event relay output
Number of output
points:
0 to 3 points (This may vary depending on the model.)
Output type: SPST contact 3 points, Common 2 points, Each individual point
Output rating: 250Vac/30Vdc, 2A (Resistance load)
Service life: 100,000 cycles or more
Min. open/close
specifications:
5V, 10mA (Reference value)
● RS-485 communication
Transmission line: 3-wire method
Transmission speed: 4800, 9600, 19200, 38400 bps
Communication
distance:
Max. 500m
CPL/MODBUS: Half duplex, start/stop synchronization method
Communication
protocol:
In conformity with CPL and MODBUS
Number of
connection units:
Max. 31 units
Terminating resistor: Connection prohibited.
● Loader communication
Transmission line: 3-wire method
Transmission speed: Fixed at 19200 bps.
Recommended cable: Specially designed cable, 2m Model No.: 81440793-001