Rhymebus RM6F5 series, Operation Manual

Page: 171 / 195

Appendix G Dynamic Brake Unit and Braking Resistor
171
App.H
g. Wiring Diagram of External Dynamic Brake Unit(DBU6) and Thermal Switch
CAUTION
Strongly recommend to Install the thermal switch for the brake protection to
prevent the brake from any possible damages caused by the overheating on the
braking resistor. Please refer to the figure 1 and 2 as following for the wiring
diagram.
1.) Wiring diagram a
RM6F5
IM
Tc2
Ta2
R/L1
S/L2
T/L3 W/T3
V/T2
PE
U/T1
PR P N
Main Circuit Terminal
Control Terminal
PE
R/L1
S/L2
T/L3
MC
X4
(External Fault)
COM
Braking Resistor (option)
Three-phase AC
power source
(single-phase terminal
are R/L1,S/L2)
AC Motor
P N
RB1 RB2
MC
DBU6
Thermal guard
(OHD3-100B)
(Figure 1)
(1) Use the thermal switch to protect the temperature of braking resistor and
generate an external fault signal to the multi-function terminal (X4) to stop the
drive when the braking resistor is overheating and interrupt the connection of
magnet contactor (MC) by output terminals Ta2 / Tc2.
(2) Set the multi-function terminals (X4) to
―-7‖ (External fault).
(3) Set the multi-function terminals (Ta2 / Tc2) to
―-11‖ (Error detection).