D U N I W A Y S T O C K R O O M C O R P .
W W W . D U N I W A Y . C O M
11 of 28
275
CEP
Terranova 906A
CONVECTRON
®
HPS/MKS 317
D-15 pins
gauge connector pin
D-9 pins
8
1
1,3 & 6
7
1
1,3 & 6
6
5
8
5
2
7
4
3
2,4,5 & 9
3
3
2,4,5 & 9
2
shield
2,4,5 & 9
no connection
4
Figure 4: Terranova 906A 15-D to 275 or CEP Connector
F. Make Relay Connections
You can set two process control set points from the front panel of the controller (
SET
PT
1) and
SET
PT
2). The set points control two relays that are accessible through the connector on the back
of the controller.
SET
PT
1 controls relay #1, and
SET
PT
2 controls relay #2. Relay contacts are
available through the DB15 Accessory Connector.
NOTE:
See also Section VIII - Application Note - Protective Circuits for Set Point Relays
G. Accessory Connector
The Accessory Connector is the top DB15 connector on the rear panel of the 906A. The connector
has female pins, the mating connector must have male pins. If you need help identifying a con-
nector source, please contact us. Following are pin assignments for the Accessory Connector:
Pin
Function
1
normally closed contact for set point relay 1
2
armature/wiper for set point relay 1
3
normally open contact for set point relay 1
4
normally closed contact for set point relay 2
5
armature/wiper for set point relay 2
6
normally open contact for set point relay 2
7
Tx for RS-232 interface (see
Serial Interface
)
8
Rx for RS-232
9,10,11,14
ground, electronics common
12
+5 volts, supplied through 1K resistor, for TTL use
13
analog output, 0.5 volt/decade (see
Analog Output
)
15
CONVECTRON bridge output; 10K source resistance
Figure 5: Accessory Connector Pin Assignments
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