Chapter 4. Service Tool Installation; Setup; Figure 4-1. Service Port Connections - Woodward VariStroke-I Installation And Operation Manual

VariStroke-I (VS-I) Electro-hydraulic Actuator
Service Tool Installation
The VS-I includes a software-based Programming and Configuration tool (PCT)
that can be loaded onto a computer and used to:

Change maximum stop position and cylinder size settings.

Calibrate the final cylinder.

Configure the inputs and outputs

View diagnostic flags
An unsafe condition could occur with improper use of these software
tools. Only trained personnel should have access to these tools.
The PC Service Tool or Programming and Configuration Tool is a software
application which runs on Windows-based PC or laptop. It requires a physical
RS-232 connection between the computer and the VS-I. The physical connection
can be made by connecting to the VS-I at the Service Port (RS-232).
Use a straight-through serial cable (not null modem). For newer PCs or laptops
with USB ports, a USB-to-serial converter is required. An approved converter can
be obtained from Woodward P/N 8928-1151.
Woodward offers a serial cable as a kit that can be ordered. The part number for
this kit is 8928-7323, which contains a 10-foot long (3 m) DB9-F to DB9-M
straight-through cable. Note that this cable has two nuts on the screws on the
female end that need to be removed prior installing this end.

Figure 4-1. Service Port Connections

Do not to damage the cover seal, the cover surface, the threads, or the
VS-I surface while removing or replacing the cover. Damage to sealing
surfaces may result in moisture ingress, fire, or explosion. Clean the
surface with rubbing alcohol if necessary. Inspect the cover joint
surfaces to ensure that they are not damaged or contaminated.
46
Chapter 4.

Setup

Straight-through
RS232_TX
Serial cable
RS232_RX
RS232_GND
Manual 26727
VS-I Serial Port
RS-232
CPU
Transceiver
DGND
Woodward