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NPServe Users Guide
Users GUide
MN024002EN February 2017
Connection details
Relays
1. Relay contacts (1, 2, 3) – Relay 1 is NO contact that
can handle 30 Amps. Relay 2 and 3 are 10A form
C contacts. All three contacts can be controlled by
activating the contact on the NPServe web page (see
Figure 2). Each contact will change state after selection
and will show the state change once action is complete
(see Figures 1 and 2).
Figure 3 . Open contact
Figure 4 . Closed contact
2. When the contact is activated, the user will be asked
if the action is to be executed. Click OK. A successful
contact state change note will appear.
Possible troubleshooting
1. If an error arises when the contact is selected, please
verify that NPServe is active.
otee:
N
Relay will change states with no connections.
2. Ensure that the relay is not configured to energize on
bootup. (This is configurable from the Configuration
page.)
INCOM
1. The icon is for EATON’s INCOM protocol devices. See
IL TD17513 for wiring specification.
2. Clicking the INCOM connection will allow for quick
access to the set of INCOM devices polled by the
NPServe.
Possible troubleshooting
If no device shows up once the icon is selected, verify the
INCOM compatible device is connected:
1. Verify that INCOM wiring is carried out per IL TD17513.
2. Verify the INCOM device is powered and active.
3. Verify that NPServe has auto learned devices
connected to it or has INCOM devices in the
configuration uploaded.
Ethernet connection
The Ethernet connection is for the network LAN
connections. The port can be used to connect the NPServe
to any Ethernet capable device:
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Supports Web Page access
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●
DNP Slave/Master communications are also available via
this connection
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Supports NTP time synchronization
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Selecting the Ethernet ICON will take the user to the
NPServe Maintenance Configuration page.
Possible troubleshooting
If NPServe is unreachable over Ethernet or is unconfigured,
see the USB Maintenance Configuration section.
DNP ports (1 and 2)
The DNP Ports (1 and 2) are RS485 ports:
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●
Can be used to connect to the VaultGard or other SCADA
Master
●
●
Can be used to connect downstream DNP devices
Possible Troubleshooting
See the DNP SCADA Section.
Analog inputs
NPServe provides three power rails:
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+5VDC, 150mA load
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-5VDC, 100ma load
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AGND (Analog ground)
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250mA total load
1. Configurations uploaded to NPServe may contain scale
factors to convert raw voltage readings to engineering
units.
2. Clicking the green box containing the readings toggles
between scaled and raw voltage readings.
