Control Connections - Siemens 6SE7024-1EP85-0AA1 Operating Instructions Manual

05.2005
X6 – Braking
resistor connection
PE H G
CAUTION
7.2

Control connections

X9 - External
24 V supply
2
1
WARNING
Siemens AG 6SE7087-2NP85-0AA0
SIMOVERT MASTERDRIVES
The external braking resistor is connected to a terminal block on the top
of the unit.
Terminal
PE
H
G
Connectable cross-section:
For 50 kW rectifier unit:
For 100 kW rectifier unit:
Terminal PE is at left as viewed from the front.
Table 7-6 Braking resistor connection
The thermostatic switch of the braking resistor must be integrated in the
de-energization circuit of the main contactor.
The unit requires an external 24 V voltage supply for operation.
The two-pole connection necessary for this is provided at the top of the
unit.
Terminal Designation
2 +24 V
1 0 V
Connectable cross-section:
♦ For 15 kW rectifier unit:
♦ For 50 kW / 100 kW rectifier units:
Terminal 1 is at the front when installed
Table 7-7 External 24 V supply
♦ In order to afford protection against direct contact, the external 24 V
power supply must be of the PELV system type (Protective Extra
Low Voltage). The power supply reference potential will then
definitely be grounded.
♦ Fuse –Fx must be fitted in order to protect the printed conductors
against overload in the event of a unit malfunction, e.g. a short
circuit in the control electronics or a wiring error.
♦ Fuse –Fx m.c.b. 6 A tripping characteristic C Siemens 5SX2 106-7.
Operating Instructions
Meaning
Protective conductor connection
Braking resistor connection
Braking resistor connection
25 mm² (AWG 2)
50 mm² (AWG 1/0)
Meaning
External 24 V supply
Reference potential
2.5 mm² (AWG 12)
4 mm² (AWG 10)
Connecting-up
Range
DC 18 V - 30 V
0V
7-7