ABB PPE091A101 3BHE044481R0101 3BHE044477P3 controller

External Speed Trim A jumper must be connected between terminals 11 and 12 unless an optional remote Speed Trim potentiometer is used. If a Speed Trim potentiometer is used, connect it as shown in the plant wiring diagram, using shielded wire. A 100 Ω multiturn potentiometer will provide ±5% speed adjustment. Potentiometers of smaller values may be used if less adjustment is desired.

Electromagnetic Interference (EMI) can be an intermittent condition. Improperly shielded installations can provide good control for a while and then cause problems. For this reason it is important to be sure all shields are properly installed.

Speed and Phase Matching with an SPM-A Synchronizer 

Connect the SPM-A (optional equipment) wires to terminals 15 (+/–) and 16 (com). Use shielded wire and connect the shield to the ground. Auxiliary Input Terminals 17 (–) and 15 (+) are used for auxiliary input from a load sensor. Use of the load sensor and parallel lines allow the 2301A Speed Control to be used in isochronous load-sharing circuits. If the load sensor is not used, droop must be used to share load. (An exception is a multiple engine installation in which one engine is operated isochronously and all other engines are operated in droop.)

Speed Sensor

 Connect a speed-sensing device (a magnetic pickup (MPU) is normally used) to terminals 8 and 7. No polarity is observed. Use shielded wire and connect the shield only at the 2301A control. The shield must have continuity the entire distance to the MPU. The shield is to be insulated from all other conductors and from the MPU.

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