Specifications

11
MITSUBISHI ELECTRIC
FR-E 500 EC
Terminal Assignment of Signal Terminals
Function
Terminal
Description
Control
connection
STF
Forward rotation start The motor rotates forward, if a signal is applied to terminal STF.
STR
Reverse rotation start The motor rotates reverse, if a signal is applied to terminal STR.
RH, RM, RL
Multi-speed selection Preset of 15 different output frequencies; programmable.
MRS
Output stop The signal stops the output frequency without regard to the delay time; programmable.
RES
RESET input An activated protective circuit is reset, if a signal is applied to the terminal RES (t > 0,1 s).
Common
SD
Common sink for contact input/
reference potential
A determined control function is activated, if the corresponding terminal is connected to the terminal SD. The SD terminal is
isolated from the digital circuits via optocouplers.
Common reference potential (sink logic) for 24 V DC/0.1 A output (PC terminal).
PC
+24 V DC output 24 V DC/0.1 A output; reference potential for source logic
Setting value
specification
10
Voltage output for
potentiometer
Output voltage 5 V DC
Max. output current 10 mA
Recommended potentiometer: 1 kΩ, linear
2
Input for frequency setting
value signal
The voltage setting value 0–5 (10) V is applied to this terminal. The voltage range is preset to 0–5 V.
The input resistance is 10 kΩ.
5
Reference point for frequency
setting value signal
Terminal 5 is the reference point for all analog setting values and for the analog output signal AM. The terminal is not isolated from
the reference potential of the control circuit and must not be earthed.
4
Input for current
setting value signal
0/4–20 mA DC
The current setting value signal (0/4–20 mA DC) is applied to this terminal. The input resistance is 250Ω.
Signal
outputs
A, B, C
Potential free
alarm output
The alarm is output via relay contacts; programmable.
The maximum contact load is 230 V AC / 0,3 A or 30 V DC / 0,3 A.
RUN
Signal output for
motor operation
The output is switched low, if the inverter output frequency is equal to or higher than the starting frequency.
The output is switched high, if no frequency is output or the DC brake is in operation. (programmable)
FU
Signal output for
monitoring output frequency
The output is switched low once the output frequency exceeds a value preset in parameter 42 (or 43). Otherwise the FU output is
switched high. (programmable)
SE
Reference potential for
signal outputs
Reference potential for the signals RUN and FU. This terminal is isolated from the reference potential of the control
circuit PC/SD.
AM
Analog output
One of 3 monitoring functions can be selected, e.g. external frequency output.
The functions are determined by parameters.
A DC voltmeter can be connected. The max. output voltage is 10 V.
Interface
—
Connection of
control panel (RS485)
Communications via RS485
I/O standard: RS485, Multi-Drop operation, max. 19200 Baud
Function Terminal
Terminal name Description
Main circuit
connection
L1, L2, L3*
Power supply connection Power supply of the inverter (380–480 V AC, 50/60 Hz)
+, −
External brake unit connection An external brake unit can be connected to the terminals + and − .
+, PR
Optional external brake resistor
connection
An optional external brake resistor can be connected to the terminals + and PR.
P1, +
Converter choke coil connection
An optional choke coil can be connected to the terminals P1 and +.
Disconnect the jumper from terminals P1 and + before.
U, V, W
Motor connection Voltage output of the inverter (3-phase, 0 V up to power supply voltage, 0.2–400 Hz)
PE Protective earth connection of inverter
* L1, N for 1-phase connection
Terminal Assignment of Main Circuit Terminals
SYSTEM DESCRIPTION