Control Sequence
5-11
5
The inpspection run command must be set before setting the Forward/Reverse signal. During start of the
inspection RUN the normal brake sequence is used and the inverter accelerates to the inspection speed
(d1-14).
To stop the inverter, the Inspection Run command or the Forward/Reverse command must be removed. In this
case:
• The inverter output is cut by baseblock immediately
• The brake open signal is removed immediately
• The contactor control output is removed immediately
The falling edge of the inspection RUN command or Forward/Reverse commands triggers the contactor open
command , the motor brake close command and the base block .
Brake Sequence
The L7 supports two types of brake sequences, one is with torque compensation at start using an analog input
value and the other is without torque compensation at start.
Related Parameters
Parameter
No.
Name
Factory
setting
Change
during
operation
Control Method
V/f
Open
Loop
Vector
Closed
Loop
Vector
H3-15 Terminal A1 function selection 0 No No No A
S1-02 DC injection braking current at start 50% No A A No
S1-03 DC injection braking current at sop 50% No A A No
S1-04 DC injection braking time at start 0.30 sec No A A A
S1-05 DC injection braking time at stop 0.60 sec No A A A
S1-06 Brake open delay time 0.20 sec No A A A
S1-07 Brake close delay time 0.10 sec No A A A
S1-16 Run delay time 0.10 sec No A A A
S1-17 DC injection current gain at regeneration 100% No No A No
S1-18 DC injection current gain at motoring 20% No No A No
S1-19 Output contactor open delay time 0.10 sec No A A A
S1-20 Zero-servo gain 5 No No No A
S1-21 Zero-servo completion width 10 No No No A
S1-22 Starting torque compensation increase time 500 ms No No No A
S1-23 Torque compensation gain in Down direction 1.0 No No No A
S1-24 Torque compensation bias in Up direction 0.0 % No No No A
S1-25 Torque compensation bias in Down direction 0.0 % No No No A
Up/Down (D/I)
MC closed (D/O)
Inspection RUN
Speed
DC Injection/
zero servo
Base block
Brake opened (D/O)
Inspection RUN
(Stop with Up/Down signal remove)
Hardware BB
Up/Down (D/I)
MC closed (D/O)
Inspection RUN
Speed
DC Injection/
zero servo
Base block
Brake opened (D/O)
Hardware BB
Inspection RUN
(Stop with Inspection Run signal remove)
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