Mitsubishi Electronics FR-S500 instruction manual Changing the control logic

How to use the control circuit terminals

1.3.3Changing the control logic

The input signals are set to sink logic.

To change the control logic, the jumper connector under the setting dial must be moved to the other position.

Change the jumper connector position using tweezers, a pair of long-nose pliers etc.

Change the jumper connector position before switching power on.

CAUTION

•Make sure that the front cover is installed securely.

•The front cover is fitted with the capacity plate and the inverter unit with the rating plate. Since these plates have the same serial numbers, always replace the removed cover onto the original inverter.

•The sink-source logic change-over jumper connector must be fitted in only one of those positions. If it is fitted in both positions at the same time, the inverter may be damaged.

1) Sink logic type

•In this logic, a signal switches on when a current flows from the corresponding signal input terminal.

Terminal SD is common to the contact input signals. Terminal SE is common to the open collector output signals.

Power supply	STF	R
	STR	R
	SD

Inverter	AX40
RUN	1
	R
SE	9
24VDC

R

1

•Connecting a positive terminal of the external power supply for transistor output to terminal PC prevents a malfunction caused by an undesirable current. (Do not connect terminal SD of the inverter with terminal 0V of the external power supply. When using terminals PC-SD as a 24VDC power supply, do not install an external power supply in parallel with the inverter. Doing so may cause a malfunction in the inverter due to an undesirable current.)

AY40	Inverter
transistor
output module 1	STF
2	STR
9
	PC
9
10

24VDC SD

Current flow

WIRING

24VDC (SD)

23