L55, Cabinet Anti-Condensation Heating - Siemens SINAMICS DCM Betriebsanleitung

11.5.6

L55, cabinet anti-condensation heating

Category
Supplementary circuits
Function
For high air humidity (e.g. in tropical countries) and/or low ambient temperatures, it is
recommended that the drive cabinets are equipped with anti-condensation heating to
guarantee reliable operation (e.g. to prevent moisture condensation). A heating element with
150 W is installed in each cabinet panel. A thermostat is used to control the temperature. An
external power supply is required (1 AC 230 V, 50/60 Hz) and must be protected with
maximum 16 A.
If the temperature inside the cabinet is lower than the value that is set at the temperature
controller D5-S23, then the cabinet heating is switched on.
If the temperature inside the cabinet is higher than the value that is set at the temperature
controller D5-S23, then the cabinet heating is switched off.
When the supply voltage for the cabinet anti-condensation heating is connected, dangerous
voltages are present in the cabinet unit, even when the main switch is open.
Connection
Table 11- 8
Terminal
3
4
PE
Terminal type: ST 2.5 QUATTRO, see Appendix A.1 Connectable conductor cross-sections
for screw terminals (Page 303)
The cable must be marked with its cable number so that it cannot be lost, the cable number
and the conductor numbers/conductor colors must be documented in the terminal diagram.
Note
When option L50 is simultaneously selected (cabinet lighting) and/or A30...A34 (motor anti-
condensation heating), these options can be supplied from one location. Terminals -X4:1, -
X4:3 and -X4:5, as well as the terminals -X4:2, -X4:4 and -X4:6 must then be connected with
wire jumpers.
SINAMICS DCM Cabinet
Operating Instructions, 04/2015, A5E36161239/RS-AA/001
DANGER
Terminal strip -X4 – connection for the cabinet anti-condensation heating
Designation
L1
N
PE
11.5 Supplementary circuits
Technical data
230 V AC power supply
PE protective conductor
Options
Insulation requirements
U ≥ 300 V
0
231