Special Ambient Temperature Considerations

Cold Start Procedure:

If performing a cold-start of QuickTrip in very cold ambient environment conditions 

(temperatures between -40 °C to +15 °C), both the hydraulic oil within the QuickTrip manifold and the QuickTrip manifold itself

must undergo a warmup procedure prior to starting the turbine to ensure the QuickTrip will operate within

specified performance limits. In particular, slew open times increase at lower hydraulic fluid temperatures

due to the higher viscosity (lower fluidity) of the hydraulic oil.
General

Woodward products covered under Woodward Product and Service Warranty (5-09-0690) are warranted

to be free from defects in materials and workmanship, when installed and used in the manner for which

they are intended, for a period of 18 months from the date of shipment from Woodward, defined in

Woodward’s Terms and Conditions.

Repairs and servicing of the QuickTrip must be performed by Woodward or its authorized service facilities

Use of a cable gland or stopping plug that does not meet the hazardous area certification requirements or

thread form or thread size will invalidate the suitability for hazardous locations.

Never remove or alter the nameplate as it bears important information which may be necessary to service

or repair the unit.

QuickTrip Cover Replacement Kit

Servo cover replacement kit may be ordered from Woodward.

Refer to Figure 5-1a which displays the part number. The location and assembly orientation of each kit

component must be installed as depicted in Figure 5-1b using a spanner wrench or Woodward tool

#1013-6603. For additional information see QuickTrip Field Repair Procedure Manual 26842.

Wiring Requirements:

• Keep this and all other low level signal cables separated from input power cables to avoid

unnecessary coupling (noise) between them.

• Wire gauge range: (0.8 to 1.3) mm² / (16 to 18) AWG

• Shielding: These outputs are unshielded, however the wires should be kept in a twisted configuration

for noise immunity.

Wiring

The QuickTrip has three, 3/4 inch (19 mm) NPT wiring entries.

When using cable and cable glands, the gland fitting must meet the same hazardous locations criteria as

the QuickTrip. Follow all installation recommendations and special conditions for safe use that are

supplied with the cable gland. The cable insulation must have a temperature rating of at least

85 °C and 10 °C above the maximum ambient and fluid temperature.

Strip the cable insulation (not the wire insulation) to expose 12 mm (1/2 inch) of the conductors. Strip the

wire insulation 5 mm from each conductor. Mark wires according to their designation and install

connectors, if required.

Remove the top access cover(s). Pass the wires through the cable gland (not provided) or conduit fitting

and attach wires to the printed circuit board terminal blocks in accordance with the wiring diagram.

Secure each wire into connector terminal using a 2.5 mm flat screwdriver blade, applying a torque of

0.2-0.25 Nm (1.75-2.25 in-lbf). Snap the terminal blocks into the header terminal blocks on the PCB.

Tighten the terminal block flange screws to 0.5 Nm (4.4 in-lbf). Replace the top access cover and torque

it using a 1 meter bar or wrench; tightening until the O-ring seal is compressed and the cover is fully

seated against the housing.

Tighten the cable gland fitting per manufacturer’s instructions or pour the conduit seal to provide strain

relief for the cable and to seal the interface between the wiring cable and the QuickTrip modules.

In order to preserve the QuickTrip’s online reparability, each of the three electrical actuator cavities must

be kept isolated from each other. This allows any individual actuator requiring repair to be electrically de

energized, repaired and placed back online while maintaining safe operation of QuickTrip in potentially

explosive environments.

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.

Wiring Requirements

• Keep this and all other low level signal cables separated from input power cables to avoid

unnecessary coupling (noise) between them.

• Wire Gauge Range: 0.8 to 1.3 mm² / 16 to 28 AWG stranded wire.

• Shielding: The control inputs are unshielded; however, the wires should be kept in a twisted

configuration for noise immunity.

Position Feedback

There are two outputs for valve position feedback on each of the QuickTrip’s three valve modules (12

outputs total). Each of the two outputs features redundant connections. Both TRIP outputs and both RUN

outputs operate as normally open. The outputs can be wired to either switch load from positive supply or

switch load to ground. The user must supply the external 24 V supply for the output to function properly. If

using the Woodward ProTech TPS logic solver, the voltage may be supplied using the on-board discrete

power terminals (24 VDC, 0.050 A).

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. Allow for

additional wire service length between the tie down points and the connectors to reduce strain on the wire

at the connector interface and to allow the black pluggable connector to be removed.

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 the diameter should be maximized where possible.

• 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 that are difficult to diagnose. Proper shielding at

the time of installation is required to ensure satisfactory operation of the product.

Wire Cross-Sectional Area Voltage Drop

A standard wire cross-sectional area voltage drop at maximum ambient temperature is provided in Table

3-6 and Table 3-7 to assist with cable selection.

Example of Voltage Drop Calculation Using Wire Cross-Sectional Area

0.067

Example #1. one power supply per module (3x power supplies): A 2.5mm2 wire will drop 0.044 V/m at 2.6 A at

maximum ambient temperature. Using 30m between the QuickTrip and the power supply would provide a

voltage drop of 30 x 0.044 = 1.32V.

Example #2. one power supply for all three modules (1x power supply): A 2.5mm2 wires will drop 0.132 V/m

at 7.8 A at maximum ambient temperature. Using 30m between the QuickTrip and the power supply would

provide a voltage drop of 30 x 0.132 = 3.96V.

It is very important to ensure the voltage at the QuickTrip’s input terminal is within the product power input

specification to achieve the maximum performance.

A guideline for allowable voltage drop is to size the wire for <10% of the nominal voltage under maximum

transient conditions.

Voltage Drop Calculation Using American Wire Gauge

Example #1. one power supply per module (3x power supplies): A 18 AWG wire will drop 0.042 V/ft at 2.6

A at maximum ambient temperature. Using 100 feet between the QuickTrip and the power supply would

provide a voltage drop of 100×0.042 = 4.2V.

Example #2. one power supply for all three modules (1x power supply): A 18 AWG wire will drop 0.125

V/ft at 7.8 A at maximum ambient temperature. Using 100 feet between the QuickTrip and the power

supply would provide a voltage drop of 100×0.125 = 12.5V.

It is very important to ensure the voltage at the QuickTrip’s input terminal is within the product power

input specification to achieve maximum performance.

Extended Power Input

The Power Wiring Requirements section above specifies the maximum length of 30 meters between the

power source and the QuickTrip. Installations that require a longer power cable run also require a much

larger wire gauge to account for voltage drop. Figure 3-6 below gives a possible solution for installations

required to run at longer distances.

Input Power

The QuickTrip requires a power source capable of 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.

Cable selection and sizing is critical 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.

The input power wires must comply with local code requirements and be of sufficient size such that the

power supply voltage minus the IR loss in the two lead wires to the QuickTrip valve electronics module

does not drop below the input minimum voltage requirement.

The QuickTrip is not equipped with an input power disconnect. A means of disconnecting input power to

the QuickTrip must be provided for safe installation and servicing.

The QuickTrip is not equipped with input power protection. A means of protecting input power to the

QuickTrip must be provided. Breakers or fuses are intended to protect installation wiring and power

sources from faults in the QuickTrip or wiring. A circuit breaker meeting the requirements listed in the

table below, or a separate protection with the appropriate ratings, may be used for this purpose.

Circuit protection, which isolates both positive and negative leads, is recommended.

Refer to the table below for recommended fuse ratings or circuit breakers.

Specifications

Physical and Performance Specifications

Solenoid Response Time: < 50 ms*

Failsafe Operation: Internal return spring on each solenoid valve

Weight: 110 kg (242 lb)

Mounting: Vertical mounting

* Solenoid response time represents the valve trip time and is defined as the time from when the solenoid

is de-energized to the time when the valves are at the full open position.

Environmental Specifications

Ambient Temperature: (–40 to +85) °C / (–40 to +185) °F

Ex nA nC Minimum Ambient

Temperature: -20 °C (-4 °F)

Vibration Resistance: MIL-STD 810F, M514.5A, Cat. 4

(0.015 G²/Hz, 1.04 Grms)

Shock Resistance: US MIL-STD-810C method 516.2. procedure 1

(10 G Peak, 11 ms duration, saw tooth)

Corrosion Resistance: Two-part epoxy paint coating. Designed for outdoor conditions.

Ingress Protection

(IEC 60529. IEC 60079-0): IP66

Electrical Specifications

Supply Voltage: 24 VDC nominal ± 10% (use cable at least 0.8mm² / 18 AWG)

Current Consumption: 8 A max (2.6 A per channel max) at steady state @ 24 V

Control Input Voltage: 0-32 VDC, 20 mA max

Feedback Output Signal: Resistive: 2 A @ 28 VDC, max 32 VDC

Inductive: 0.5 A @ 28 VDC (max. 0.2 Henry)

Supply Voltage Connections: Terminal suitable for 0.8 to 3.3 mm² or 18 to 12 AWG stranded wire

Control Input and Discrete

Removable terminal suitable for 0.8 to 3.3 mm² or 18 to 12 AWG

stranded wire

Connections:

Cable Entries: 3 X 0.750”-14 NPT

1 Ground

Chemically Resistant Versions

For steam turbine applications where lube oil contains harsh chemical contaminants (ammonia, hydrogen

sulfide, etc.), a chemically resistant version of the QuickTrip has been developed. Chemically resistant

versions feature best-in-class seals in all wetted locations within the trip block assembly. Chemically

resistant versions provide an optimal solution for extreme chemical resistance while still maintaining

QuickTrip operating pressure and temperature ranges. Please contact Woodward for available models

and information regarding chemical resistance for specific applications.

Rotary Trip Valves

All three of the QuickTrip’s trip valves are spring return, two position rotary valves. When any of the

hydraulic valves is in its closed position, the ports in the valve are blocked preventing hydraulic flow

through the valve. As a valve rotates to the tripped position, the ports open and the trip header pressure

is connected to either the drain, or the inlet ports of another one of the valves. The combined action of the

three valves results in trip header pressure being connected to drain only when 2 or 3 valves are tripped.

If the unit detects any shutdown condition or loss of power occurs, the trip valve return springs will force

the valves to the fail-safe / tripped position.