Section 2
Page 45
UVTOCUnpacking Installation Setup.fm Serial Data Connections
Figure 24 RS485 Connection to Remote Device
Important Note: Install a jumper from JP1-2 to JP1-3 (lower two pins) on the I/O pcb
(130143) for RS422 and RS485 communications (Figure 11 on page 33, item 5).
2.5.2 Optional Blowback Filter Valve
The optional blowback filter valve is controlled by an internally-fused, switched
relay output supplying 24 V dc (maximum 500 mA) to a valve on an extended
blowback filter system. This output may be configured for separate ON and
OFF periods. The ON period is configurable between 1 and 100 seconds, and
the OFF period is configurable between 1 and 999 minutes.
This output is designed to supply power to only one blowback filter valve.
Interposing a relay and power supply will be required if more than 0.5 A is
required for valve(s) operation.
Installation information is supplied with the blowback filter valve.
Figure 25 Locating the Blowback Filter Connector
1. 8001 I/O Printer Circuit Board Assembly 2. Blowback Filter Connector
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