Chapter 5.
Service Tool
Overview
The Service Tool software is used to configure, setup, and troubleshoot the TecJet 52 control. This
chapter describes the installation and use of the TecJet Service Tool and provides detailed instructions
for configuring and setting up the TecJet 52 control for customer-specific applications.
Many TecJet 52 units are delivered pre-configured and calibrated
with OEM specific settings. These units do not require the use of the
Service Tool. However, the Service Tool is a valuable
troubleshooting aid.
An improperly calibrated control could cause an overspeed or other
damage to the engine. To prevent possible serious injury from an
over-speeding prime mover, read and follow this entire procedure
before starting the engine.
Description
The TecJet Service Tool software resides on a PC (personal computer) and communicates to the TecJet
52 control via RS-232 connection. An external TTL to RS-232 transceiver (Woodward P/N 1249-1039) is
needed to make possible communications with the Woodward TecJet Service Tool. This works best if it is
wired into the harness within 18 inches (1 meter max) of the TecJet 52 control.
A communication harness kit can also be purchased from Woodward (one each of Woodward P/N 1249-
1120 and 1249-1039). See Figure 5-1 for the communication harness connections.
The communication harness kit is a service port adaptor and is not intended to remain in the engine
wiring harness during normal operation (only during engine setup). To use this adaptor, a 9-pin straight-
through serial cable is needed between the harness transceiver RS-232 port and the PC. This serial
cable must include ALL conductors. If it is limited to only pins 2, 3, and 5, it will not function correctly with
the adaptor.
Installation
The TecJet Service Tool is available at www.woodward.com/software. Select software product “TecJet
Service Tool”. Follow the installation instructions given on that page.
An unsafe condition could occur with improper use of these software
tools. Only trained personnel should have access to these tools.
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