What to do if AC Tech Keypad displays 'JF'?
If your AC Tech Keypad or SCF drive displays 'JF', it usually indicates a communication problem. Check the wiring between the remote keypad and the drive. Also, if attempting to start the drive from the Remote Keypad, ensure TB-1 is closed to TB-2. Furthermore, avoid attempting to power the Remote Keypad and an auxiliary relay from TB-11.
How to fix AC Tech Keypad RUN key not starting the drive?
To start the drive using the RUN key on the AC Tech Remote Keypad, ensure the Remote Keypad is selected as the control source, and TB-1 is closed to TB-2 on the drive’s terminal strip.
Why AC Tech Keypad R/F key is not changing rotation direction?
To use the R/F key on the AC Tech Remote Keypad to change rotation direction, the Remote Keypad must be selected as the control source, Parameter 17 - ROTATION must be set to “02” (FORWARD AND REVERSE), and the M key must be pressed within 4 seconds to confirm the change.
General| Series | SCF Series |
|---|---|
| Frequency | 50/60 Hz |
| Enclosure | NEMA 1 |
| Dimensions | Varies by model |
| Weight | Varies by model |
| Type | Variable Frequency Drive |
| Input Voltage | 115/230 VAC |
| Output Voltage | 0-Input Voltage |
| Power Range | Up to 3 HP |
| Control Method | V/Hz |
| Ambient Temperature | 0 to 40°C |
Details the warranty terms for SCF Series AC motor controls.
Procedure for safe installation after prolonged inactivity to prevent capacitor damage.
Specifies the voltage ranges and frequencies for SCF Series drives.
Details requirements for input fusing and disconnect switches.
Provides guidance on connecting single and three-phase AC power.
Wiring diagram for a typical two-wire start/stop control scheme.
Alternative wiring for two-wire start/stop using separate contacts for forward/reverse.
Wiring diagram for a three-wire start/stop control using momentary contacts.
Wiring for speed pot and preset speed control with start/stop.
Covers voltage, frequency, start/stop, and output parameters.
Details analog I/O, function selects, and serial link configuration.
Covers timing, limits, boost, and compensation settings.
Matches PI function to system type and feedback signal (direct/reverse).
Sets speed command output based on error percentage.
Sets ramp rate of speed command output to eliminate steady-state error.
Wiring example for PI mode using keypad setpoint and 4-20 mA feedback.
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