SERVOPRO NOx Analyzers Page
22 Zero Gas Flow Digital Output DRV
23 Span Gas Flow Digital Output DRV
24 Zero Digital Output DRV
25 Local/Remote Digital Output NO Relay to Digital Ground
26 Read Cal Mode Digital Output NO Relay to Digital Ground
27 24 VDC 24 VDC 24 VDC
28 Digital Ground Digital Ground Digital Ground
28-Pin Auxiliary (BPA) Connector Assignments
Pin # Signal
Operation
1 Analog Ground Analog Input Analog Ground
2 Reserved Analog Input Reserved
3 Reserved Analog Input Reserved
4 Reserved Analog Input Reserved
5 Relay RTN 1 Digital Output RTN Relays 1 - 4
6 Relay RTN 2 Digital Output RTN Relays 5 - 8
7 Relay RTN 3 Digital Output RTN Relays 9 - 12
8 Relay RTN 4 Digital Output RTN Relays 13 - 15
9 User-Defined NO Relay 1 Digital Output Uses Relay RTN 1
10 User-Defined NO Relay 2 Digital Output Uses Relay RTN 1
11 User-Defined NO Relay 3 Digital Output Uses Relay RTN 1
12 User-Defined NO Relay 4 Digital Output Uses Relay RTN 1
13 User-Defined NO Relay 5 Digital Output Uses Relay RTN 2
14 User-Defined NO Relay 6 Digital Output Uses Relay RTN 2
15 User-Defined NO Relay 7 Digital Output Uses Relay RTN 2
16 User-Defined NO Relay 8 Digital Output Uses Relay RTN 2
17 User-Defined NO Relay 9 Digital Output Uses Relay RTN 3
18 User-Defined NO Relay 10 Digital Output Uses Relay RTN 3
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