Rice Lake SCT-30 - Manual (Page 3)

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Technical training seminars are available through Rice Lake Weighing Systems.
Course descriptions and dates can be viewed at www.ricelake.com/training
or obtained by calling 715-234-9171 and asking for the training department.
Contents
1.0 Introduction............................................................................... 1
1.1 Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1.2 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.3 Electrical Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
1.4 Analog Output Type Selection . . . . . . . . . . . . . . . . . . . . . . . . . 7
1.5 Instrument Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2.0 Calibration ................................................................................ 9
2.1 Real Calibration (With Sample Weights) . . . . . . . . . . . . . . . . . 9
2.2 Theoretical Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Digital Filtering . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
3.0 RS-485 Serial Connection ...................................................... 11
3.1 Continuous One Way Transmission Protocol . . . . . . . . . . . . 11
3.2 Modbus-RTU Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
3.3 Alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
4.0 Reserved for the Installer ....................................................... 14
4.1 Restoring Factory Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
4.2 Calibration and RS-485 Port Setting Access Limitation . . . . 14
© Rice Lake Weighing Systems. All rights reserved. Printed in the United States of America.
Specifications subject to change without notice.
Rice Lake Weighing Systems is an ISO 9001 registered company.
December 05, 2013