Omron VARISPEED L7

6-13
6
 Brake Sequence
The L7 supports two types of brake sequences, one with torque compensation at start using an analog input
value and one without torque compensation at start.
Related Parameters
Multi-function Digital Inputs (H1-01 to H1-05)
Multi-function Digital Outputs (H2-01 to H2-03)
Parameter
No.
Name
Factory
setting
Change
during
operation
Control Method
V/f
Open
Loop
Vector
Closed
Loop
Vector
Closed
Loop Vec-
tor (PM)
H3-15 Terminal A1 function selection 0 No - - A A
S1-01 Zero speed level
i
No
A
1.2 Hz
A
0.5 Hz
A
0.1 Hz
A
0.5 Hz
S1-02 DC injection braking current at start 50% No A A - -
S1-03 DC injection braking current at sop 50% No A A - -
S1-04DC injection braking/Zero speed time at start0.40 sec No AAAA
S1-05DC injection braking/Zero speed time at stop0.60 sec No AAAA
S1-06Brake open delay time 0.20 sec No AAAA
S1-07Brake close delay time 0.10 sec No AAAA
S1-16Run delay time 0.10 sec No AAAA
S1-17 DC injection current gain at regeneration 100% No - A - -
S1-18 DC injection current gain at motoring 20% No - A - -
S1-19Output contactor open delay time 0.10 sec No AAAA
S1-20 Zero-servo gain 5 No - - A A
S1-21 Zero-servo completion width 10 No - - A A
S1-22
Starting torque compensation increase time/
starting torque fade-out time
500 ms No - - A A
S1-23 Torque compensation gain in Down direction 1.0 No - - A A
S1-24 Torque compensation bias in Up direction 0.0% No - - A A
S1-25 Torque compensation bias in Down direction 0.0% No - - A A
S1-29 Torque fade out speed level 0.0 Hz No - - A A
S1-30 Torque fade out compensation time 1000 msec No - - A A
S1-31 Torque limit fade out time at stop 0 msec No - - - A
Set Value Function
Control Methods
V/f
Open
Loop
Vector
Closed
Loop
Vector
Closed
Loop
Vector
(PM)
80 to 84
Speed selection inputs (refer to page 6-5, Speed Selection Sequence Using Digital
Inputs)
Yes Yes Ye s Ye s
86 Contactor closed answer back signal Yes Yes Yes Yes
Set Value Function
Control Methods
V/f
Open
Loop
Vector
Closed
Loop
Vector
Closed
Loop
Vector
(PM)
33 Zero servo end - - Yes Yes
40 Brake release command Yes Yes Yes Yes
41 Output contactor close command Yes Yes Yes Yes