Motor Terminal Box Connections - Invertek Drives Optidrive Series User Manual

4.5. Motor Terminal Box Connections

Most general purpose motors are wound for operation on dual voltage supplies. This is indicated on the nameplate of the motor
This operational voltage is normally selected when installing the motor by selecting either STAR or DELTA connection. STAR always gives the
higher of the two voltage ratings.
Incoming Supply Voltage
4.6. Motor Thermal overload Protection.
4.6.1. Internal Thermal overload protection.
The drive has an in-built motor thermal overload function; this is in the form of an "I.t-trP" trip after delivering >100% of the value set in P1-
08 for a sustained period of time (e.g. 110% for 60 seconds).
4.6.2. Motor Thermistor Connection
Where a motor thermistor is to be used, it should be connected as follows :-
Optidrive HVAC User Guide V2.00
Motor Nameplate Voltages
230 230 / 400
400 400 / 690
600 600 / 1050
400 230 / 400
600 340 / 600
Additional Information
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Delta
Star

Compatible Thermistor : PTC Type, 2.5kΩ trip level

Use a setting of P1-13 that have Input 5 function as External Trip, e.g.
P1-13 = 6. Refer to section 8.1 for further details.
Connection
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