Alarm; Overcurrent Alarm [ Oc-A ]; Current Limit [ C-Lm ] - Autonics DPU Series User Manual

6. Parameter setting and functions
6.3

Alarm

Alarm
Overcurrent alarm
Overvoltage alarm
Fuse break alarm
Heatsink overheat alarm
Element error alarm
Heater break alarm
※ 1: When it cannot return by re-supplying power because fuse is disconnected or element is
error, refer to '8. Maintenance'.
6.3.1

Overcurrent alarm [ OC-A ]

When overcurrent alarm occurs, output stops and alarm maintains. [ O-C ] flashes for 0.5 sec in the
display part and the EVT indicator flashes for 0.5 sec.
When setting as [ NON ], alarm output does not occur but [ O-C ] flashes.
Alarm clears when re-supplying power, reset, or stop the unit.
(1) Overcurrent alarm value setting [ OC-U ]
Set overcurrent alarm value within 0.0 to 120.0% of rated current range.
(2) Overcurrent alarm delay time [ OC-T ]
Set overcurrent alarm delay time within 0 to 100 sec. range. After the set time, over current alarm
occurs.
6.3.2

Current limit [ C-LM ]

This function limits current when using big inrush load to protect thyristor.
Especially for voltage feedback, current for load resistance value flows and it may over the rated
thyristor only voltage control. Therefore, it limits current to prevent over the rated current.
• Set range: 0 to 110% (unit: %)
42
Display Operation in alarm
O-C
O-V
Stops output
※ 1
FUSE
(SCR OFF)
TEMP
※ 1
SCR
Continues operation
H-BK
Alarm clear
• Re-supply the power.
• RESET ( key)
• Switch to STOP mode
Automatically cleared within
the set range
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