4 APPLICABLE FUNCTIONS
4.20 Disconnection/incorrect wiring detection function
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4
Setting method [A]
■200 V class servo amplifiers with a capacity of 2.0 kW or less
When [Pr. PC27.4 Input open-phase detection selection] is set to "0" (automatic), the input open-phase detection function is
disabled.
The input open-phase detection function is enabled by setting [Pr. PC27.4] to "1" (warning enabled) or "2" (alarm enabled). If
"1" (warning enabled) is set, [AL. 1E9 Open-phase warning] will be output when the input open phase occurs. To generate
[AL. 139 Open-phase error] when an open phase occurs, set [Pr. PC27.4] to "2" (alarm enabled).
■200 V class servo amplifiers with a capacity of more than 2.0 kW
When [Pr. PC27.4 Input open-phase detection selection] is set to "0" (automatic), the input open-phase detection function is
enabled. If "0" (automatic) is set, [AL. 1E9 Open-phase warning] will be output when an input open phase occurs. To generate
[AL. 139 Open-phase error] when an open phase occurs, set [Pr. PC27.4] to "2" (alarm enabled).
■400 V class 1-axis servo amplifiers
When [Pr. PC27.4 Input open-phase detection selection] is set to "0" (automatic), the input open-phase detection function is
enabled. If "0" (automatic) is set, [AL. 1E9 Open-phase warning] will be output when an input open phase occurs. To generate
[AL. 139 Open-phase error] when an open phase occurs, set [Pr. PC27.4] to "2" (alarm enabled).
Related objects [G]
The input open-phase status is output with bit 10 (S_PNLT) of [Status DO5 (Obj. 2D15h)]. Bit 10 is on when an input open-
phase has occurred and off when input open-phase has not occurred.
For the MR-J5D_-_G_, bit 10 (S_PNLT) of [Status DO 5] is always off.
When the input open-phase detection is enabled at warning occurrence or at alarm occurrence in [Pr. PC20.4 Input open-
phase detection selection], bit 10 (S_PNLT) of [Status DO5] turns on when one phase is open.
When the input open-phase detection is disabled, bit 10 (S_PNLT) of [Status DO5] does not turn on when one phase is open.
When using the bit with 1-phase AC input, disable the input open-phase detection in [Pr. PC20.4].
When the input open-phase detection is enabled at warning occurrence or at alarm occurrence, two phases open and all
phases open cannot be detected because bit 10 (S_PNLT) of [Status DO5] is always on.
When [Pr. PC20.6 Input open-phase status output selection] is set to "0" (on during servo-on and while one phase is open), bit
10 (S_PNLT) of [Status DO5] turns off when two phases or all phases are open.
When [Pr. PC20.6] is set to "1" (on during servo-on and while one phase, two phases or all phases are open), bit 10 (S_PNLT)
of [Status DO5] turns on when two phases or all phases are open.
When [Pr. PC20.6] is set to "2" (on while one phase is open) or "3" (on while one phase, two phases, or all phases are open),
bit 10 (S_PNLT) of [Status DO5] turns off in the servo-off state.
Servo
parameter
Symbol Name Outline
PC27.4 *COP6 Input open-phase detection selection Enable or disable the detection of input open-phase detection function.
0: Automatic (initial value)
1: Warning enabled
2: Alarm enabled
3: Disabled
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