Manual 26815 QuickTrip Electro-Hydraulic Trip Block Assembly
Woodward 27
Pipe diameters to both the Supply and Drain connections should be maximized, within reason, to ensure
that flow losses and restrictions are minimized. For the same reason, pipe lengths should be kept to a
minimum.
Do not remove any test port connection plugs when hydraulic
supply pressure is applied. All required hydraulic connections
must be made before hydraulic pressure is applied. Hydraulic
test ports provided for use by authorized service personnel
only.
Electrical Connections
An overall electrical wiring diagram is shown in Figure 3-3. Detailed wiring requirements for these
connections will follow in the remainder of the Electrical Connections section.
Figure 3-2. Electrical Wiring Diagram
Input Power
The QuickTrip requires a power source capable of a supplying the necessary output voltage and current
at full transient conditions. The maximum power in watts (W) of a DC source can be calculated by
multiplying the rated output voltage by the maximum output current capability. The calculated power
rating of the supply should be greater than or equal to QuickTrip requirements. The electrical power
supply should be able to provide 8 A (or 2.6 A per channel) at
24 Vdc continuously, with a peak of 10 A for 100 milliseconds.
Cable selection and sizing are very important to avoid power loss during operation. The power supply
input at the electronic module input terminal must always provide the required nominal voltage to operate
the valve.
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