IMPULSE•G+/VG+ Series 4 Technical Manual
November 2022
Page 100
Table 5-32: No-Load Brake Parameter Settings
Parameter
Display
Function
Range
Default
C08-01
Torque Comp Time Time for the Torque Comp value to reach 300%.
0.00–2.55 sec
1.00
C08-02
IFB OK Time
Time to look for current feedback before posting a BE2 alarm.
Setting this to 0.00 will disable torque proving and BE2
detection (consult factory before disabling torque proving).
0.00–2.55 sec
1.00
C08-03
Min Brk Rel Trq
Minimum brake release torque.
0–300%
10
C08-04
Rollback Timer
Time for the brake to release and for brake feedback to be
received into the Brake Answerback MFDI at start before
posting BE1 or BE4 alarm. It is also the time when the amount
of rollback is checked.
0.00–2.55 sec
0.30
C08-05
Rollback Count
Detection counts for excessive rollback.
4 pulses = 1 ppr of F01-01
0–15000 pulses
800
C08-06
BE3/Alt Torq Tim
Time period when C08-07 is measured. See C08-08.
0.00–2.55 sec
0.30
C08-07
BE3 Detect Count
Detection count for Encoder/Seized-Brake Alarm (BE3). It is
the minimum encoder pulse count, during C08-06, below
which triggers a BE3 alarm.
4 pulses = 1 ppr of F01-01
0–15000 pulses
10
C08-08
Alt Rev Trq Lim
For a LOWER command in the NLB Hoist mode only (A01-03
= 2). Torque limit for time of C08-06 to prevent driving through
a brake that has failed closed with a load on the hook.
0–300%
25
C08-09
Zero Speed Level
Speed feedback at which Load Float activates.
0.0–10.0 Hz
1.0
C08-10
Load Float Time
Time period during which the motor is held at the zero-position
and the electric brake remains open. This time begins when
the motor speed is below the Zero Speed Level (C08-09).
0-65535 sec
10*
C08-11
Brake Set Delay
Time for the brake to set and for brake feedback to be
removed from the Brake Answerback Multi-Function input at
stop before posting a BE5 Alarm.
0.0–25.5 sec
0.7
C08-12
BE6 Detect Time
Time period during which the electric brake is set and tested
for sustaining the load.
NOTE:
To disable BE6 detection, set C08-12 to 0.0.
0.0–25.5 sec
5.0
C08-13
BE6 Max Count
Total pulse counts must be less than C08-13, during C08-12,
otherwise BE6 alarm.
4 pulses = 1 ppr of F01-01
0–15000 pulses
250
C08-14
Brake Hold Speed
Frequency the VFD outputs to push against the brake for
brake proving at start and the frequency the VFD outputs until
Brake Set Delay time expires or the Brake Answerback MFDI
is removed.
0.0–25.5%
0.0
C08-15
Load Float Ext T
Load Float extension time enabled by MFDI=5D.
0–65535 sec
10
C08-16
Init FWD Brk Trq
Initial Forward Brake Release Torque. The percent of forward/
up motor torque that must be reached within C08-02 time to
release the brake at the start of a forward/up run. (BE2
detection).
10–300%
100
C08-17
Init REV Brk Trq
Initial Reverse Brake Release Torque. The percent of reverse/
down motor torque that must be reached within C08-02 time to
release the brake at the start of a reverse/down run. (BE2
detection).
10-300%
20
C08-18
BE6 Up Speed Lim Maximum up speed limit during a BE6 or BE8 alarm.
0.00–150.00 Hz
6.00
