Saftronics VG520P4 Technical Manual page 47

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Connecting the Braking Resistor (ERF)
Connect the braking resistor as shown in Figure 3.14. When using a Braking Resistor Unit, set L8-01 to "1" (protect
selection for DB resistor) and set L3-04 to "0" (no Stall Prevention during deceleration).
VG5
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Connecting the Braking Resistor Unit and Braking Unit
Connect the Braking Resistor Unit and Braking Unit to the Inverter as shown in Figure 3.15. Set L8-01 to "0" (protect
selection for DB resistor) and L3-04 to "0" (no Stall Prevention during deceleration) before using the Inverter with the
Braking Resistor Unit connected.
Set L8-01 to "1" before operating the Inverter with the braking resistor without Thermal Overload Relay trip contacts.
The Braking Resistor Unit cannot be used and the deceleration time cannot be shortened by the Inverter if L3-04 is
set to "1" (i.e., if Stall Prevention is enabled for deceleration).
To prevent the unit from overheating, design the sequence to turn OFF the power supply for the Thermal Overload
Relay trip contacts of the Unit as shown in Figure 3.15.
200 V Class Inverters with 3.7 to 7.5 kW Output and
400 V Class Inverters with 3.7 to 15 kW Output
VG5
200 V Class Inverters with 11 kW or higher Output and
400 V Class Inverters with 18.5 kW or higher Output
VG5
Firmware – S1043
Revision: 2 (9/98)
Figure 3.14 Connecting the Braking Resistor
Figure 3.15 Connecting the Braking Resistor Unit and Braking Unit
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Chapter 3: Wiring
© Saftronics, Inc.