Rockwell Automation 1336E IMPACT Adjustable Frequency AC Drive User Manual V 1-4.XX - Manual (Page 311)

Troubleshooting 12-29
The HIM pot does not
control motor speed.
• Check if SP An In1 Select (parameter 133) or SP An In2
Select (parameter 136) is set to the HIM port number.
• Check if SP An In1 Scale (parameter 135) or SP An In2
Scale (parameter 138) is 0.125.
• Check if a Speed Ref 1 – 7 (parameters 29 through 36)
is linked to SP An In1 Value (parameter 134) or SP An
In2 Value (parameter 137).
• Check which speed reference the drive is following in
Drive/Inv Status (parameter 21) bits 13 – 15. The speed
reference should be set to the speed reference that SP
An In1 Value (parameter 134) or SP An In2 Value
(parameter 137) is linked to.
The drive will not
change direction.
• Check if the port is enabled in SP Enable Mask
(parameter 124).
• Check if Direction is enabled in Dir/Ref Mask
(parameter 125).
• Check if Direction owner in Dir/Ref Owner
(parameter 128) has any bit set. If so, remove the
command direction.
• Check to make sure that bit 11 in Logic Options
(parameter 17) is clear (0).
You cannot change the
speed reference.
• Check if the port is enabled in SP Enable Mask
(parameter 124).
• Check if Reference is enabled in Dir/Ref Mask
(parameter 125).
• Check if Reference owner in Dir/Ref Owner
(parameter 128) has any bit set. If so, remove the
command reference. If bit 0 (for the L Option control) is
set, you need to do one of the following to remove
ownership:
• Clear bit 0 in Dir/Ref Mask (parameter 125).
• If L Option Mode (parameter 116) is 2, 3, 8, 9, 23, 24, or
26, close the L Option inputs for speed references 1, 2,
and 3.
The drive does not run
correct torque.
• Set the drive defaults and run start up again to tune the
drive.
• Check Spd/Trq Mode Sel (parameter 68) and Slave
Torque % (parameter 70).
The drive cannot control
current and trips on an
overcurrent fault.
If you are using an encoder, check that you have entered
the current PPR into Encoder PPR (parameter 8).
The MOP does not
work.
• Check L Option Mode (parameter 116).
• Make sure that Mop Value (parameter 119) is linked to a
speed reference.
The pulse input does not
work.
• Make sure that the pulse input jumper is set correctly.
• Make sure that the input is differential and not single
ended.
• Check the values of Pulse In PPR (parameter 120),
Pulse In Scale (parameter 121), and Pulse In Offset
(parameter 122).
• Check the link on Pulse In Value (parameter 123).
If: Then you should: