Manual 26710V1
ProTechTPS Total Protection System
Woodward
33
The ProTechTPS control’s terminal blocks are designed to be removed by hand.
With circuit power & trip (interposing) relay controlled power disconnected, all
terminal blocks can be removed, one at a time by unscrewing their terminal-
locking screws and pulling them out of their sockets by hand.
When removing a terminal block, never pull on the wires connected
to the terminal block.
Field wiring access for bulkhead mounted models is through gland plates located on
the bottom of the enclosure. These gland plates allow users to bore multiple and
different sized access holes for conduit entry, as required. Refer to Figure
2-3 for gland plate location and size. For EMI (electromagnetic interference) reasons,
Woodward recommends that all low-voltage field wiring be separated from all high-
voltage field wiring by using separate conduit and conduit entries into the ProTechTPS
enclosure. Woodward also recommends that power wiring be segregated in the same
manner, however LV & HV input power may be routed together.
Field wiring access for panel-mounted models is located on the back of the
ProTechTPS enclosure. To allow proper installation of the unit’s back cover plate,
Woodward recommends that all field wiring be routed from the bottom of the
package. The units back cover must be installed. Refer to Figure 2-5 for field wiring
access information. For EMI (electromagnetic interference) reasons, Woodward
recommends that all low-voltage field wiring be separated from all high-voltage field
wiring where possible. Woodward also recommends that power wiring be segregated
in the same manner, however LV & HV input power may be routed together.
HIGH VOLTAGE—When wiring to interposing relays, be sure to wire
both contacts with the same polarity. Failure to do so will create a
potential shock hazard, which could cause injury or death.
All input and output wiring must be in accordance with Class I
Division 2 wiring methods, and in accordance with the authority
having jurisdiction.
All peripheral equipment must be suitable for the location in which it
is being used.
Figures 2-8 and 2-9 show the control wiring diagrams for the ProTechTPS
system. Refer to Figure 2-10 for proper routing and stress relief of field wiring
entering the ProTechTPS system. Wire tie-wrap fasteners are provided on each
module to assist with I/O wire routing and installation.
When wiring to each ProTech module, in order to allow hot
replacement of a module in the event of a failure, it is important to
make connections such that any single module’s terminal blocks and
power supplies can be completely disconnected without affecting the
rest of the system.
