Mitsubishi Electronics FR-S500 instruction manual Control circuit

The terminal functions change with input terminal function selection (Pr. 60 to Pr.63). (*3)

Standardconnection diagramand terminal specifications

(2) Control circuit

Symbol			Terminal Name
		STF	Forward rotation
			start
input		STR	Reverse rotation
Contact			start
		RH	Multi-speed
		RM
		RL	selection
		SD	Contact input
	(*1)		common (sink)
			External
			transistor
	PC		common, 24VDC
	(*1)		power supply,
			contact input
			common (source)

10Frequency setting power supply

signalsInput setting	2	Frequency setting
		(voltage signal)
Frequency	4	Frequency setting
		(current signal)

5Frequency setting input common

Definition

Turn on the STF signal to	When the STF and STR
	signals are turned on
start forward rotation and
	simultaneously, the stop
turn it off to stop.
	command is given.

Turn on the STR signal to start reverse rotation and turn it off to stop.

Turn on the RH, RM and RL signals in appropriate combinations to select multiple speeds.

The priorities of the speed commands are in order of jog, multi-speed setting (RH, RM, RL, REX) and AU.

Common to the contact input terminals (STF, STR, RH, RM, RL). (*6)

When connecting the transistor output (open collector output), such as a programmable controller (PLC), connect the positive external power supply for transistor output to this terminal to prevent a malfunction caused by undesirable currents.

This terminal can be used as a 24VDC, 0.1A power output across terminals PC-SD.

When source logic has been selected, this terminal serves as a contact input common.

5VDC, Permissible load current 10mA.

Inputting 0 to 5VDC (or 0 to 10V) provides the maximum output frequency at 5V (10V) and makes input and output proportional. Switch between 5V and 10V using Pr. 73 "0-5V, 0-10V selection". Input resistance 10kΩ. Maximum permissible input voltage 20V

Input 4 to 20mADC. It is factory set at 0Hz for 4mA and at 60Hz for 20mA.

Maximum permissible input current 30mA. Input resistance approximately 250Ω.

Turn ON signal AU for current input.

Turning the AU signal on makes voltage input invalid. Use any of Pr. 60 to Pr. 63 (input terminal function selection) to set the AU signal.

Common terminal for the frequency setting signals (terminal 2, 4) and indicator connection (terminal AM). (*6)

4