Jumper Options - Switch Control Relays From Normally Open To Normally Closed - DPS Telecom NetGuardian-16S User Manual

5.10 Jumper Options — Switch Control Relays from Normally
Open to Normally Closed
Fig. 5.10.1. The control relay jumpers are accessible through a notch in the upper circuit board, on the front
Fig. 5.10.2. Detail view showing how the jumpers are labeled on the circuit board
By factory default, the NetGuardian-16S's eight control relays are configured for Normally Open operation. You
can reconfigure the control relays for Normally Closed operation by resetting jumpers on the NetGuardian-16S
circuit board. Each control relay can be individually reconfigured by setting the jumpers.
To open the unit and expose the circuit board, remove the screws from the top of the NetGuardian-16S and lift
the top cover off. The control relay jumpers are on the lower circuit board, on the front right of the unit. The
upper circuit board is cut to allow access to the adjustable jumpers, as shown in Figure 5.10.1, above. Each
jumper has a label etched on the circuit board that shows which control relay it corresponds to, as shown in
Figure 5.10.2.
To switch a control relay to Normally Closed operation, place its corresponding jumper in the closed position, as
shown in Figure 5.10.3.
right corner of the unit
Fig. 5.10.3. Jumper settings for configuring the control relays
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