Hitachi SJ Series, User Manual

Page: 371 / 786

12-17-10
Chapter 12 Inverter Functions
12.17.5 Performing the Contactor Control
• How to perform the operation sequence using a
contactor.
• How to involve a contactor on the output side for
the control.
• How to save energy by controlling the contactor on
the input side.
• For performing the contactor operation, set the
[AF120] contactor control selection to 01.
• The 039[CON] contactor control signal for the
output terminal function and the 112[COK]
contactor check signal for the input terminal
function are available.
Setting Items Required for the Contactor Control
Function
• The contactor control requires this function
because operating a contactor during the inverter
output generates a surge causing damage to the
inverter.
• When an error occurs in the contactor sequence,
the inverter trips at [E110].
• For the contactor control, a trip occurs in the
following cases.
- When the contactor check signal 112[COK] is used,
[COK] is not turned on within the contactor check time
at start-up.
- When the contactor check signal 112[COK] is used,
[COK] is not turned off within the contactor check time
at stop.
- When the contactor check signal 112[COK] is used,
[COK] is turned off while the contactor control signal
039[CON] is on
Item Parameter Data Description
Contactor control
selection
[AF120]
00
Disabled
01
Enabled (primary side)
Place a contactor on the primary side of the
inverter to reduce standby power.
02
Enabled (secondary side)
Place a contactor on the secondary side of the
inverter to implement the function as a brake
sequence.
Waiting time at start [AF121] 0.00~2.00(s)
Set the waiting time from the input of an operation
command to the start of the inverter output.
Contactor release
delay time
[AF122] 0.00~2.00(s)
Set the time from the output shutoff of the inverter
to the control of the contactor.
Contactor check time [AF123] 0.00~5.00(s)
Set the time from the operation command to the
control of the contactor.
Input terminal function [CA-01]~[CA-11] 112
[COK] Contactor check signal
OFF: Contactor released
ON: Contactor in operation
Output terminal
function
[CC-01]~[CC-07] 039
[CON] Contactor control signal
OFF: Contactor release command
ON: Contactor operation command
Q
A
!