Mitsubishi Electric FR-CC2-H315K Instruction Manual page 109

 External thermal relay (OH signal, E.OHT)
Thermal relay protector
U
Inverter
V
W
Converter OH
SD
unit
External thermal relay input connection diagram
• The External thermal relay input (OH) signal is used when using the external thermal relay or the thermal protector built
into the motor to protect the motor from overheating.
• When the thermal relay is activated, the inverter output is shut off by the external thermal relay operation (E.OHT).
• The OH signal is assigned to terminal OH in the initial status. To assign the signal, set "7" in any parameter from Pr.178,
Pr.187, or Pr.189 (Input terminal function selection).
NOTE
• Changing the terminal assignment using Pr.178, Pr.187, or Pr.189 (Input terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
 Operation selection for the OH signal (Pr.876)
• The OH signal input status and the Pr.876 setting for the converter operation are as shown below.
OH signal input status
(external terminal)
ON
OFF
108
5. PARAMETERS
5.5 (T) Multi-function input terminal parameters
Motor
M
Pr.876 = "0"
Function disabled.
Function disabled.
Converter unit operation
Pr.876 = "1" (NC contact)
Operation continues.
Inverter output shutoff (E.OHT).
Pr.876 = "2" (NO contact)
Inverter output shutoff (E.OHT).
Operation continues.