12 Descriptions of Parameter Settings | VFD-ED
Encoder Feedback Signal Fault Detection Time
Control Mode
VFPG FOCPG FOCPM Default: 1.0
Settings 0.0–10.0 sec.
When there is a PG loss, encoder signal error, pulse signal setting error or signal error, if time exceeds the
setting for this parameter (Pr.10-04), the PG signal error occurs. Refer to Pr.10-03 for the encoder
feedback signal fault action.
Encoder Stall Level (PGF3)
Control Mode
VFPG SVC FOCPG
FOCPM
Default: 115
Settings 0–120%
0: Disable
Determines the maximum encoder feedback signal allowed before a fault occurs. (The maximum output
frequency Pr.01-00 = 100%.)
Encoder Stall Detection Time (maximum output frequency Pr.01-00 = 100%)
Control Mode
VFPG SVC FOCPG
FOCPM
Default: 0.1
Settings 0.0–2.0 sec.
Encoder Slip Range (PGF4) (maximum output frequency Pr.01-00 = 100%)
Control Mode
VFPG SVC FOCPG
FOCPM
Default: 50
Settings 0–50%
0: Disable
Encoder Slip Detection Time (maximum output frequency Pr.01-00=100%)
Control Mode
VFPG SVC FOCPG
FOCPM
Default: 0.5
Settings 0.0–10.0 sec.
Encoder Stall and Slip Error Action (maximum output frequency Pr.01-00 =
100%)
Control Mode
VFPG SVC FOCPG
FOCPM
Default: 2
Settings 0: Warn and keep operation
1: Fault and ramp to stop
2: Fault and stop operation
When the difference of (rotation speed-motor frequency) exceeds the Pr.10-07 setting, and the detection
time exceeds Pr.10-08 or the motor frequency exceeds Pr.10-05 setting, the drive starts to count time. If
the detection time exceeds Pr.10-06, the encoder feedback signal error occurs. Refer to Pr.10-09 encoder
stall and slip error action.
When Pr.10-09 is set to 1 (Fault and ramp to stop), if brake or operation contactor is OFF under the
circumstance that STO or MI40 (Enable drive function) is not deactivated during deceleration, elevator still
runs even brake has engaged (brake wear), and electric arc occurs when operation contactor is OFF.
Mode Selection for UVW Input
Control Mode
VFPG FOCPG FOCPM Default: 0
Settings 0: Z signal is at the falling edge of U-phase
1: Z signal is at the rising edge of U-phase