Setting the limit value

The limit function prevents damaging the load caused by operation errors by setting a limit on the output setting of the PCR-M. The limit value can be specified to match the load conditions in advance.

The limit can be set regardless of whether the OUTPUT is on or off.

1	Press the LIMIT key. The LIMIT key illuminates, and the limit setting display appears. The limit settings switch in order each time the LIMIT key is pressed. Press the LIMIT key repeatedly until the desired limit setting is displayed. The measured value display is shown after all limit settings are shown.
2	Turn the rotary knob to set the condition.
3	To set other limit values, press the LIMIT key. To show another setting display or the measured value display, press the V, F, or I key. The voltage setting display, frequency setting display, or measured value display is shown, respectively.

■ Current limit value and current limit operation

The current limit value of the output current can be specified.

Output Mode	Limit
	PCR500M	PCR1000M	PCR2000M	PCR4000M
AC mode	0.10 A to 5.25 A	0.20 A to 10.50 A	0.40 A to 21.00 A	0.80 A to 42.00 A
DC mode	0.10 A to 4.20 A	0.20 A to 8.40 A	0.40 A to 16.80 A	0.80 A to 33.60 A

The operation to be carried out when the current limit is exceeded can be selected.

Current Limit Operation	Display	Function
TRIP		Turns the OUTPUT off and activates the alarm when an overload condition lasts more than 3 seconds.
LIMIT CONTROL		Decreases the output voltage so that the current does not exceed the limit when an overload occurs (software CC operation*1).

*1. It is calculated for the RMS value. Due to the relation between the processing time of measurement and the voltage resolution, it may take a few seconds to exceed the value of current limit.

■ Setting the voltage upper and lower limits

You cannot set the voltage outside the limit range. Set the limit so that the upper limit is greater than or equal to the lower limit.

Output Mode	Voltage Range	Lower Limit	Upper Limit
AC mode	135 V	0.0 V to 137.5 V	0.0 V to 275.0 V
	270 V	0.0 V to 275.0 V	0.0 V to 275.0 V
DC mode	135 V	-388.0 V to 194.0 V	-194.0 V to 388.0 V
	270 V	-388.0 V to 388.0 V	-388.0 V to 388.0 V

■ Frequency upper and lower limits

Cannot be set in DC mode. You cannot set the frequency outside the limit range. Set the limit so that the upper limit is greater than or equal to the lower limit.

Output Mode	Lower Limit	Upper Limit
AC mode	40.0 Hz to 500.0 Hz	40.0 Hz to 500.0 Hz

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