KUHNKE Automation 5.2 Auxiliary Supply "24VDC", X10 The thermo-controller features an on-board power supply unit designed for an input voltage of 24 VDC (18V ... 32V). The power supply unit is internally protected against polarity reversal and limits the inrush current. It supplies power to the thermo-controller's circuitry and is required to measure the mains voltage. Be sure to connect the supply voltage to PE since this is required for making measurements for line voltage compensation. Both the cord and the power supply unit must have external protection against short circuit and overload. For UL applications / machines use a listed DC branch circuit protection of max 4A.
The admissible diameter of the cord connecting the 24 VDC power is between 0.75 mm2 and 2.5 mm2. Connector 2-pin, male, 2.5 mm 2 Use male connector FKC 2.5/ 2-STF-5.08 (1873207) Connector included in package. Connector X10 wiring: Only attach the unit to a 24 VDC power supply source if the source is guar- anteed to meet safe extra low voltage requirements (SELV) as defined in IEC / EN / DIN EN / UL corresponds 60950-1. For UL applications / machines: Please use for the auxiliary supply a listed DC branch circuit protection of max 4A min 30VDC, fuse in accordance with UL 248.
To make the phase fired controller work properly; pin L- must have the same potential as the neutral point of the power supply. E 774 GB 19 30.06.2014 X9 L- external power supply, GND (PE/N potential) Phoenix MSTB 2.5/2-G-5.08 external power supply 24 VDC (18V ... 32V) L+