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'SIGNAL CONNECTOR' in figure 4. Also indicated are the input signal's positive and negative polarities
for thermocouple connection. These markings are also on the printed circuit board in front of the connector.
Care should be taken to connect the positive and negative legs of the signal source to the proper terminals on
the connector. A wrong connection will result in incorrect process readings. (No polarity is necessary for
RTD or thermistor).
OUTPUT CONNECTOR PIN ASSIGNMENT
Table 1 shows the output connector pin numbers and signal description. For convenience, the printed circuit
board is labeled R1 through R7. Additionally, positive and negative outputs for open collector outputs are
also indicated.
TABLE 1. Output Connector Pin Assignment
S C R E W T E R M IN A L O U T P U T C O N N E C T O R
1
2
P IN N O
1
2
3
4
5
6
7
8
9
10
11
12
13
14
NOTE: Pins on the connector other than those designated in table 1 must NEVER be connected to any
other signal under any circumstances. Also, proper connection and correct orientation of the connector are
necessary to avoid malfunction or permanent damage to the instrument.
3
4
5
6
L IM IT 1 C O M M O N /O P E N C O L L E C T O R P O S IT IV E
L IM IT 1 N O R M A L L Y O P E N /O P E N C O L L E C T O R N E G A T IV E
L IM IT 2 C O M M O N /O P E N C O L L E C T O R P O S IT IV E
L IM IT 2 N O R M A L L Y O P E N /O P E N C O L L E C T O R N E G A T IV E
L IM IT 3 C O M M O N /O P E N C O L L E C T O R P O S IT IV E
L IM IT 3 N O R M A L L Y O P E N /O P E N C O L L E C T O R N E G A T IV E
L IM IT 4 C O M M O N /O P E N C O L L E C T O R P O S IT IV E
L IM IT 4 N O R M A L L Y O P E N /O P E N C O L L E C T O R N E G A T IV E
T IM E R 1 C O M M O N /O P E N C O L L E C T O R P O S IT IV E
T IM E R 1 N O R M A L L Y O P E N /O P E N C O L L E C T O R N E G A T IV E
T IM E R 2 C O M M O N /O P E N C O L L E C T O R P O S IT IV E
T IM E R 2 N O R M A L L Y O P E N /O P E N C O L L E C T O R P O S IT IV E
D IS P L A Y H O L D S W IT C H C O N N E C IT O N
D IS P L A Y H O L D S W IT C H C O N N E C T IO N
Page
7
8
9
10
D E S C R IP T IO N
20
11
12
14
13
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