4-19 890CS & 890CD Common Bus Units
890CS Common Bus Supply - Frames B & D; 890CD Common Bus Drive and 890SD Standalone Drive - Frames B, C & D
Power Connections - 890CD Common Bus Drive
MOTOR MOTOR THERMISTOR
Detects over-temperature in motors fitted with an
internal thermistor.
M1 (U), M2 (V), M3 (W).
Connect to the motor in any order.
Maximum wire sizes:
Frame B: 6mm
2
/ 10AWG, 0.5-0.9Nm / 0.4-0.7lbf
Frame C: 10mm
2
/ 8AWG, 1.2Nm / 0.9lbf
Frame D: 16mm
2
/ 4AWG, 2-4Nm / 1.5-3lbf
Link these terminals for motors not fitted with an
internal thermistor (or set SETUP::TRIPS::I/O
TRIPS::INVERT THERMIST to True).
IMPORTANT: This input provides “Basic”
insulation only
Maximum wire size:
0.22 Nm/0.16lbf
The connections have no polarity. Thermistor PTC
‘Type A’ is supported as defined in IEC 34-11 Part 2:
Rising temperature trip resistance: 1650 to 4000
Ω
Falling temperature trip reset resistance: 750 to
1650
Ω
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