Mitsubishi Electric FR-A842-07700, Instruction Manual

Page: 47 / 128

Control circuit
46
INSTALLATION AND WIRING
 Output signal
2.6.3
Control logic (sink/source) change
Change the control logic of input signals as necessary.
To change the control logic, change the jumper connector position on the control circuit board.
Connect the jumper connector to the connector pin of the desired control logic.
The control logic of input signals is initially set to the sink logic (SINK) for the FM type inverter.
The control logic of input signals is initially set to the source logic (SOURCE) for the CA type inverter.
(The output signals may be used in either the sink or source logic independently of the jumper connector position.)
NOTE
• Make sure that the jumper connector is installed correctly.
• Never change the control logic while power is ON.
Ty
p
e Terminal
Symbol
Terminal name Terminal function description
Rated
specification
Rela
y
A1,
B1,
C1
Relay output 1 (fault
output)
1 changeover contact output that indicates that the protective function of
the converter unit has been activated and the outputs are stopped.
Fault: discontinuity across B and C (continuity across A and C), Normal:
continuity across Band C (discontinuity across A and C) Contact capacity 230
VAC 0.3 A (power
factor = 0.4)
30 VDC 0.3 A
88R,
88S
For manufacturer setting. Do not use.
Open collector
RDA
Inverter operation
enable (NO contact)
Switched to LOW when the converter unit operation is ready.
Assign the signal to terminal MRS (X10) of the inverter.
The inverter can be started when the RDA status is LOW. Permissible load 24
VDC (maximum 27
VDC) 0.1 A
(The voltage drop is
2.8 V at maximum
while the signal is
ON.)
LOW is when the
open collector output
transistor is ON
(conducted).
HIGH is when the
transistor is OFF (not
conducted).
RDB
Inverter operation
enable (NC contact)
Switched to LOW when a converter unit fault occurs or the converter is
reset.
The inverter can be started when the RDB status is HIGH.
RSO Inverter reset
Switched to LOW when the converter is reset (RES-ON).
Assign the signal to terminal RES of the inverter.
The inverter is reset when it is connected with the RSO status LOW.
IPF
Instantaneous power
failure
Switched to LOW when an instantaneous power failure is detected.
FAN Cooling fan fault Switched to LOW when a cooling fan fault occurs.
SE
Open collector output
common
Common terminal for terminals RDA, RDB, RSO, IPF, FAN
Connect this terminal to terminal SD (sink logic) or PC (source logic) of
the inverter.
———
CAUTION
 Do not use the empty terminals (NC) of the control circuit. Doing so may lead to damage of the converter unit
and the inverter.
 Always connect terminal RDA of the converter unit and terminal MRS (X10) of the inverter, and terminal SE of
the converter unit and terminal SD (terminal PC in the source logic) of the inverter. Not doing so may lead to
damage of the converter unit.
Jumper connector Jumper connector Jumper connector
For sink logic
SOURCE
SINK