SLIMPAK 10923H5A Control circuit module

The SPC Service Tool is used to configure, calibrate, adjust, monitor, and troubleshoot an SPC. The service tool runs on a PC and communicates with the SPC through a serial connection. The serial port connector is a 9-pin sub-D socket and uses a straight-through cable to connect to the PC. Woodward offers a USB to 9-pin Serial Adapter kit if needed for new computers that do not have a 9-pin serial connector (P/N 8928-463). This kit contains a USB adapter, software, and a 1.8 m (6 feet) serial cable. (See Chapter 4 for SPC Service Tool installation instructions.) The SPC is configured by using the SPC Service Tool's configuration file editor to create a file that is then loaded into the SPC. The SPC Service Tool can also read an existing configuration from an SPC into the configuration file editor.

The first time an SPC is connected to an actuator

 it must be calibrated to the actuator's position feedback transducer. The user is guided through the calibration process by the service tool. Calibration can also be performed by the control via the DeviceNet link. The calibration procedure can be found in the GAP™ help file.

To prevent damage to electronic components caused by improper handling, read and observe the precautions in Woodward manual 82715, Guide for Handling and Protection of Electronic Controls, Printed Circuit Boards, and Modules.

Power Requirements

 The SPC requires a voltage source of (18 to 32) V (dc), with a current capacity of 1.1 A max. If a battery is used for operating power, a battery charger is necessary to maintain a stable supply voltage. The power line should be protected with a 5 A, 125 V fuse capable of withstanding a 20 A, 100 ms in-rush when power is applied. The SPC is not equipped with input power switches. For this reason, some means of switching input power must be provided for installation and servicing. To prevent damage to the control, make sure that the alternator or other battery-charging device is turned off or disconnected before disconnecting the battery from the control.

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