Here is a list of the faults and alrams for the Impluse P3 drives. It can at least point you in the right direction if the Impulse P3 alarms during normal use...
- OV (Overvoltage)
1. Check input supply voltage (L1, L2, L3). Is it within the specified rating?
2. Check all external wiring and wiring precautions.
3. Verify that the proper dynamic braking resistance is applied. Call Electromotive Systems if it is
not clear how to verify this, or what resistor is required.
4. Lengthen the deceleration time, if possible.
- OL1 (Overload-protect the motor)
1. Reduce the load.
2. The motor overload protection function of IMPULSE•P3 is not programmed for the proper motor FLA's.
- OL2 (Overload–protect the inverter)
1. Reduce the load.
2. Consult Electromotive Systems. IMPULSE•P3 (or the motor) may be undersized.
- OL3 Overtorque Detection
Motor current exceeding set value of no-18 for the amount of time set in no-19.
1. Check for proper programming of no-18 and no-19; reduce load.
- EF4, EF5 (External Fault)
1. Check the condition of the control inputs of the P3IF.
2. Check programming of no-33 (terminal S4).
3. Check programming of no-34 (terminal S5).
- PB (Pushbutton Sequence)
1. Check that all speed inputs are being received in proper sequence (i.e., Fwd or Rev 1st speed, then 2nd speed, then 3rd speed, etc.). A PB fault could signal either an open control conductor or improper wiring of the control inputs.
- FU (Fuse Blown)
1. Consult Electromotive Systems immediately.
- CPF00 Control Function Fault
Initial memory fault is detected
- CPF01 Control Function Fault
ROM fault is detected
- CPF04 Control Function Fault
Constant fault is detected
- CPF05 Control Function Fault
AD converter fault is detected.
- GF Ground Fault
Inverter output side is grounded. Output shuts off.
1. Check that the motor or load side wiring is not grounded; check that motor insulation is not deteriorated; check that wiring of load side is not damaged.
These drives were made by Electromotive Systems, Inc. (ESI)
They are a company based in Milwaukee, Wisconsin. ESI specializes in providing advanced electrical and electronic control systems for various industries, including locomotive and marine propulsion, industrial automation, crane control, and power generation. They offer a range of products and solutions, including motor control systems, electronic controls, power conversion equipment, and related services.
Not sure these drives are still around.