Siemens SIMOVERT MASTERDRIVES Motion Control Instructions De Service page 208

Connecting-up
X9 - External
24 V supply
2
1
X9
X100 -
24 V voltage output,
USS bus
33
34
35
36
7-14
In order to also enable the unit to be parameterized and monitored with
the DC link discharged (e.g. line interruption), an external 24 V voltage
supply is necessary. The two-pole connection required for this is
situated at the top of the unit.
With the DC link charged, the voltage is supplied by an internal switch-
mode power supply.
Terminal Designation
2 +24 V
1 0 V
Connectable cross-section: 2.5 mm² (AWG 12)
Terminal 1 is at the front when installed.
Table 7-14 External 24 V supply
In standby mode, the unit has a current drain of 700 mA. This is
increased if optional cards are inserted.
The unit is provided with a 24 V voltage output to which a maximum of
two further converters can be connected.
One further inverter can be connected to the 24 V voltage output in the
case of a unit with a housing width of 45 mm.
The USS bus connection is linked with the control electronics and the
9-pole SUB D socket of the serial interface.
The bus terminating resistor can, if required, be powered up by means
of the switch S1 located next to the bus connection. In the upper
position, the bus termination is switched in.
Power-up is necessary if the unit is located at one end of the USS bus.
Terminal Designation
33 +24 V (out)
34 0 V
35 RS485P (USS)
36 RS485N (USS)
Connectable cross-section: 2.5 mm² (AWG 12)
Terminal 33 is at the top when installed.
Table 7-15 24 V voltage output, USS bus
Meaning
External 24 V supply
Reference potential
Meaning
24 V voltage output
Reference potential
USS bus connection
USS bus connection
6SE7087-7JP50
Operating Instructions SIMOVERT MASTERDRIVES
08.2008
Range
DC 18 V - 30 V
DC 18 V - 30 V
Range
DC 18 V - 30 V
0 V
RS485
RS485
Siemens AG