Manual 26815 QuickTrip Electro-Hydraulic Trip Block Assembly
Woodward 30
Wiring Strain Relief
Tie down points and ratcheting tie wraps are provided to secure the wiring to the PCB mounting plate.
This helps prevent wire strain from being transmitted to the connection at the terminal block and to keep
the wiring from chafing on the cover when tightening and under vibration. Failure to secure the wiring
could result in intermittent connections resulting in intermittent operation or shutdown conditions.
Additional wire service length should be allowed between the tie down points and the connectors to
reduce strain on the wire at the connector interface and to allow removal of the black pluggable
connector.
Figure 3-6. Recommended Wiring Strain Relief
Shield Installation Notes
• Wires exposed beyond the shield should be as short as possible, not exceeding 50 mm (2 inches).
• The shield termination wire (or drain wire) should be kept as short as possible, not exceeding 50 mm
(2 inches), and where possible the diameter should be maximized.
• Installations with severe electromagnetic interference (EMI) may require additional shielding
precautions. Contact Woodward for more information.
• Do not ground shield on both ends, except where permitted by the control wiring diagram.
Failure to provide shielding can produce future conditions which are difficult to diagnose. Proper
shielding, at the time of installation is required to ensure satisfactory operation of the product.
Control Input
The QuickTrip valves are controlled with the independent trip relay outputs from a trip system logic solver
such as the Woodward ProTechTPS.
Note: When used with the ProTechTPS, external power is not necessary for these inputs. All voltage
and isolation is provided within the ProTechTPS (24 Vdc, 0.5 A).
Trip Points:
• If the Input voltage drops below14 Vdc, then the input will detect a Trip state.
• If the Input voltage rises above 15 Vdc, then the input will detect a Run state.
Control Input Isolation: 500 Vac from Input to chassis.
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