Lenze ERBSxxxxxxxx - Manual (Page 50)

6 Electrical installation
Important notes
EDKRBS047R DE/EN/FR/ES/IT 8.0
50
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H1_E_INST−eInstall_EN
6 Electrical installation
Important notes
(
Stop!
Possible overheating of the brake resistor during operation
Inadequate heat dissipation during operation can cause the brake resistor to
overheat.
Possible consequences:
ƒ The brake resistor is destroyed.
ƒ The drive is not braked but coasts to a standstill.
Protective measures:
ƒ Always connect the thermal contact of the brake resistor.
ƒ Integrate the thermal contact into the overall equipment monitoring
apparatus in such a way that the supply of power to the standard device is
switched off if the brake resistor overheats (e.g. switch−off by means of
mains contactor control).
Connection data
Cable gland Type of
connection
Size of connection Tightening torque
RB1, RB2
(brake resistor)
M25
Screw terminal
0.5 ... 10 mm 2
20 ... 6 AWG
1.5 ... 1.8 Nm
13.3 ... 15.9 lb−in
PE
(PE conductor)
Screw M4
2.2 ... 2.7 Nm
19.5 ... 23.9 lb−in
T1, T2
(thermal contact)
M12 Screw terminal
0.25 ... 4 mm 2
24 ... 12 AWG
0.6 ... 0.8 Nm
5.3 ... 7.1 lb−in