Details On The Control Circuit Terminals Of The Converter Unit (Fr-Cc2) - Mitsubishi Electric FR-CC2-H355K Instruction Manual

Control circuit
2.6.2
Details on the control circuit terminals of the
converter unit (FR-CC2)
The input signal function of the terminals in
function selection).
For the parameter details, refer to the Instruction Manual of the FR-CC2.
Input signal
Terminal
Terminal name
Symbol
RES Reset
External thermal
OH
relay input
RDI Contact input
Contact input
common (sink)
External transistor
SD common (source)
24 VDC power supply
common
External transistor
common (sink)
PC
Contact input
common (source)
24 VDC power supply
common
24 V external power
+24
supply input
38
INSTALLATION AND WIRING
can be selected by setting Pr.178, Pr.187, Pr.189 to Pr.195 (I/O terminal
Terminal function description
Use this signal to reset a fault output provided when a protective function
is activated. Turn ON the RES signal for 0.1 seconds or longer, then turn
it OFF.
In the initial setting, reset is always enabled. By setting Pr.75, reset can
be set enabled only at fault occurrence of the converter unit. The inverter
recovers about 1 second after the reset is released.
The External thermal relay input (OH) signal is used when using an
external thermal relay or a thermal protector built into the motor to
protect the motor from overheating.
When the thermal relay is activated, the inverter is shut off due to the
fault occurrence of the external thermal relay operation (E.OHT).
The function can be assigned by setting Pr.178.
Common terminal for contact input terminal (sink logic) and terminal FM
Connect this terminal to the power supply common terminal of a
transistor output (open collector output) device, such as a programmable
controller, in the source logic to avoid malfunction by undesirable
current.
Common terminal for the 24 VDC power supply (terminal PC, terminal
+24)
Isolated from terminals 5 and SE.
Connect this terminal to the power supply common terminal of a
transistor output (open collector output) device, such as a programmable
controller, in the source logic to avoid malfunction by undesirable
current.
Common terminal for contact input terminal (source logic).
Can be used as a 24 VDC 0.1 A power supply.
For connecting a 24 V external power supply.
If a 24 V external power supply is connected, power is supplied to the
control circuit while the main power circuit is OFF.
Rate Specification
Input resistance:
4.7 k
Voltage when
contacts are open: 21
to 27 VDC
Current when
contacts are short-
circuited: 4 to 6
mADC
———
Power supply voltage
range: 19.2 to 28.8
VDC
Permissible load
current: 100 mA
Input voltage:
23 to 25.5 VDC
Input current:
1.4 A or less