Power supply modules PW-8901 and PW-8902

Preliminary information !

The PW-8901 and PW-8902 power supply modules are intended for powering TECOMAT TC800 PLC assemblies from a 24 V DC network with a power of 15 W, resp. 25 W in a 24 mm wide housing. 

These are pulse-regulated power supplies with an output level of 24 V SELV (circuits with low safe voltage protection) with a permanent total output power of 15 W, resp. 25 W. The power supply includes a mains power failure monitoring block. The output level is equipped with overvoltage protection elements.

The connectors for connecting the 24 V DC supply voltage are screwless.

Detailed connection data, principles of correct installation, connection examples and principles of increasing durability and reliability are given in the TECOMAT TXV 001 08.01 Programmable Controllers Design Guide.

	For correct function in case of parallel operation of several power supply modules, it is necessary to ensure a minimum consumption of 4.8 W. Otherwise, stable operation of the power supplies is not ensured.
	It is not permissible to remove or insert a switched-on power supply module into the system! It must be switched off when handling the power supply module! The system may be turned on if it is powered by another power supply module.

Fig. 1 Preliminary information - TC800 source design