13600 Industrial Park Boulevard, P.O. Box 1551, Minneapolis, MN 55440 USA (612) 553-5330
The best way to accomplish these checks is to perform the start-up procedures in the “Network
Commissioning” section of this manual. If these procedures have been performed and the problem
persists, obtain factory service.
MCB Replacement
If an MCB board is defective and must be replaced, the proper controller software must be loaded
into the replacement MCB. This can be done either at the factory or at the building site with a PC
running Open Protocol Monitor software.
The factory will download the proper controller software into a replacement MCB board before it is
shipped if you include the OPM controller’s program code with the replacement MCB part order. If
the program code is not provided, the MCB board will be shipped without software.
Parts List
Component
designation Description Part no.
MCB
{
Microprocessor Control Board 677811B-01
T1 Transformer: 115/24 Vac 606308B-01
T2 Transformer: 24/18 Vac, center tapped 467381B-14
CB1 Circuit breaker 7350733-03
F1 Fuse: MCB input power, 1.5 A (Bussman No. GDC-1.5A) 658296A-01
– PC Communications Cable Kit 0057186802
Notes:
1. If desired, the factory can download the correct software into the replacement MCB prior to shipment. See the “MCB
Replacement” section above for more information.
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