Connecting A Braking Resistor; Braking Resistor Settings; Operation Check - YASKAWA V1000 Series Installation & Start-Up Manual

3.11 Braking Resistor
Figure 3.30
4.
Follow maufacturer instructions to connect the resistor unit to the drive using proper
wire gauge according to local electrical codes.
Power leads for the remote mount resistors generate high levels of electrical noise;
group these signal leads separately.
5.
Mount the resistor unit on a noncombustible surface. Maintain minimum side and
top clearances according to resistor manufacturer instructions.
WARNING! Fire Hazard. Do not use improper combustible materials. Failure to comply could result in death
or serious injury by fire. Attach the drive or braking resistors to metal or other noncombustible material.
6.
Reinstall drive covers and resistor covers, if provided.
Adjustments
■
7.
Set parameter L3-04 = "0" or "3" to disable stall prevention during deceleration.
Set parameter L8-01= "1" to enable overheat protection when using Yaskawa
heatsink mounted braking resistor. Set L8-01 = "0" for other braking resistor types.
Set parameter L3-04 = "3" to generate the shortest possible deceleration time.
L8-01: Internal Dynamic Braking Resistor Protection
selection
L3-04: Stall Prevention During Deceleration
<1> Select either 0 or 3.
<2> This setting cannot be used in OLV control for PM motor.

Operation Check

■
8.
Operate the system and verify the required deceleration rate is obtained during
dynamic braking or stopping.
84
Power
supply
MCCB
THRX OFF ON MC
SA
MC
THRX
SA
Thermal relay switch for
external braking resistor
TRX
MC
SA
TRX
MA MC
Fault contact
Figure 3.30 Connecting a Braking Resistor
Table 3.16 Braking Resistor Settings
Parameter
<1>
YASKAWA ELECTRIC TOEP C710606 09B YASKAWA AC Drive V1000 Installation & Start-Up Manual
Thermal
relay
MC
R/L1 B1 B2
S/L2
U/T1
T/L3
V/T2
W/T3
Drive
0: Disabled. The drive will not provide overheat
protection. Supply separate means of overheat protection.
1: Enabled. Braking Resistor is protected from overheat.
0: Stall prevention disabled.
3: Stall prevention enabled with a braking resistor.
Braking resistor
Motor
Settings
<2>