DPS NetGuardian 16, User Manual

Page: 16 / 64

12
2. Remove the screws from the sides of the NetGuardian 16 case.
3. Slide the top cover of the case off to expose the circuit board.
4. The adjustable jumpers are shown in
Fig. 5.7
. All alarm inputs can be individually configured for
current or voltage operation. Remember that the default jumper position is OPEN for measuring
voltage.
Note: Each jumper inserts a 250-ohm shunt resistor across the input. This must be
taken into account when defining the analog input reference scale.
+
Current
Voltage
+
Jumper installed for current
Jumper removed for voltag e
Unjumpered/Open Position:
Voltage Operation (default)
Jumpered/Closed Position:
Current Operation
4 to 20 mA
Current Source
Transducer
Voltage Source
Transducer
Analog
Channel
Input
-
-
Analog
Channel
Input
250 Ohm
Shunt
Jumper Analog
J20 ANA 1
J21 ANA 2
J22 ANA 3
J23 ANA 4
Fig. 5.8. Jumper settings for analog alarms inputs.
5. Slide the top cover of the case back into position and replace the screws.
6. Reconnect and power up the NetGuardian 16.
NetGuardian 16 Front Panel
6
Fig. 6.1 . NetGuardian 16 Front panel connections