Hitachi WJ Series

Chapter 9 Inverter Functions
9-9-2
Code
Item
Description
Data
[b021]
*1
Overload restriction 1
mode selection
Disable
00
Enable during acceleration and constant
speed
01
Constant speed only
02
Enabled during acceleration and constant
speed (Accel. during regeneration)
03
[b022]
*1
Overload restriction 1
active level
Sets the current value when the overload
restriction is activated.
(0.20 to 2.00) × rated current (A)
(ND mode)
(0.20 to 1.50) × rated current (A)
(LD mode)
[b023]
*1
Overload restriction 1
action time
Sets the deceleration time when the
overload restriction is activated. The
value is set to the deceleration time from
the maximum frequency to 0 Hz.
0.1 to 3000.0 (s)
[b024]
Overload restriction 2
mode selection
Sets the operation of Overload restriction
2, which operates when the [OLR]
terminal is ON.
The settings are similar to [b021], [b022],
and [b023].
00 to 03
[b025]
Overload restriction 2
active level
(0.20 to 2.00) × rated current (A)
(ND mode)
(0.20 to 1.50) × rated current (A)
(LD mode)
[b026]
Overload restriction 2
action time
0.1 to 3000.0 (s)
[C001]
to
[C007]
Input terminal
function
Overload restriction selection [OLR]:
Switches overload restriction 1/2 by
turning on or off of this terminal.
39
■ Example of overload restriction function operation
*1. "2nd-motor control [SET]" target parameter. The second control parameter is also subject to setting.
Output frequency
Overload restriction 1
active level [b022]
*1
Output current
Command frequency
Overload restriction 1
action time [b023]
*1
Maximum frequency
[OLR] input
ON
Overload restriction 2
action time [b026]
Overload restriction 2
active level [b025]