Auxiliary Power Supply, Main Contactor - Siemens simovert masterdrives Operating Instructions Manual

08.2008
7.2

Auxiliary power supply, main contactor

Types E, F, G:
X9 - external DC
24 V supply, main
contactor control
5
4
3
2
1
NOTE
WARNING
Siemens AG 6SE7087-7KN50
SIMOVERT MASTERDRIVES
The 5-pole terminal strip is used for connecting up a 24 V voltage
supply and a bypass contactor.
The 24V-voltage supply is required if the inverter is connected up via a
bypass contactor.
The aux. current supply simultaneously ensures communication with
the automation even if the supply voltage of the power section is de-
energized.
The connections for the contactor control are floating.
The position of the terminal strip can be seen from the connection
overviews.
Terminal Designation
5 Main contactor control
4 Main contactor control
3 n.c
2 0 V
1 +24 V (in)
Connectable cross-section: 2.5 mm
Terminal 1 is at the front when installed.
Table 7-3 Connection of external DC 24 V aux. voltage supply and bypass
contactor control (types E, F, G)
The excitation coil of the main contactor has to be damped with
overvoltage limiters, e.g. RC element.
The external 24 V voltage supply must meet the requirements for safety
separation (PELV electrical circuit = Protective Extra Low Voltage).
Operating Instructions
Meaning
Main contactor control
Main contactor control
Not connected
Reference potential
DC24 V ... DC30 V
24 V voltage supply
2
(AWG 12)
Connecting-up
Range
AC 230 V
1 kVA
0 V
For current
requirement
see section
"Technical
Data"
7-7