Woodward 8200-556 DVP Digital Valve Positioner

Be careful when unpacking the ProTech® 203 system. Check the device for signs

of damage such as a bent or dented case and loose or broken parts. If damage

is found, notify the shipper immediately. The device may be stored in its original

shipping container until it is ready for installation. Protect the device from weather

and from extreme humidity or temperature fluctuations during storage.

Carefully study this chapter before choosing a location for the ProTech 203

system. Wiring and grounding considerations may influence the selection of a

location for the device.

Multiple chassis systems using MicroNet power supplies may have power supplies of the same model,

but in different chassis, connected to the same source. In this case, each branch to a chassis must have

its own overcurrent protection sized according to Table 4-4. and the power source must be sized for the

sum of the branches.

Input Power Wiring

MicroNet controls require a fixed wiring installation for ac applications. Ground leakage exceeds 3.5 mA

AC. Maximum ground leakage for ac installations is 7.2 mA at 60 Hz. A ground conductor connected to

the chassis is required for safety. The power supply grounding terminal(s) should also be connected to

earth to ensure grounding of the power supply printed circuit boards. The grounding conductor must be

the same size as the main supply conductors.