Drive Protection - YASKAWA CIMR-G7U Technical Manual

Drive Protection

This section explains the functions for protecting the Drive and the braking resistor.

Performing Overheating Protection on Mounted Braking Resistors
Perform overheating protection on Drive-mounted braking resistors (Model: ERF-150WJ ).
When overheating in a mounted braking resistor is detected, an alarm RH (Mounted braking resistor overheat-
ing) is displayed on the Digital Operator, and the motor coasts to a stop.
Related Parameters
Name
Parameter
Number
Display
Internal
Dynamic
Braking
Resistor
L8-01
Protection
Selection
DB Resistor
Prot
Multi-function Contact Outputs (H2-01 to H2-05)
Setting
Value
D Braking resistor fault (ON: Resistor overheat or braking transistor fault)
The most likely causes of RH (Mounted braking resistor overheating) being detected are that the deceleration
time is too short or that the motor regeneration energy is too large. In these cases, lengthen the deceleration
time or replace the Braking Resistor Unit with one with a higher breaking capacity.
INFO
Description
Selects the DB protection only
when using 3% duty cycle
heatsink mount Yaskawa braking
resistor. This parameter does not
enable or disable the DB
function of the Drive.
0: Not Provided
1: Provided
Function
Change
Setting Factory
during
Range Setting
V/f
Operation
0 to 1 0 No A
V/f
Yes
Drive Protection
Control Methods
Open Open
V/f
Loop Flux Loop
with
Vector Vector Vector
PG
1 2
A A A A
Control Methods
Open Open
V/f
Loop Flux Loop
with
Vector Vector Vector
PG
1 2
Yes Yes Yes Yes
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