Installation Dragon PTN Nodes
13
Release 01 02/2018
e.
Hidden CSM1/2 Switch-Over Button
A hidden button is installed on the NSM to force a switch-over from the active to the redun-
dant standby CSM (not applicable on the XT-1104-A node).
Example:
CSM1 = ACT or active = lit LED;
CSM2 = STB or standby = dark LED;
To switch-over, push and hold the CSM1/2 switch-over button (approximately 6 seconds)
until the CSM2 LED lights. The switch-over was successful resulting in CSM2 = ACT and CSM1
= STB;
f.
DI (=Digital Input) Connector (RJ45)
Two digital inputs (=DI), to detect an open or closed potential free contact, are available via
the DI RJ45 connector on the front panel, see Figure 6. Via these inputs, the NSM can pick up
external events (e.g. opening door …) and raise an appropriate alarm (e.g. ‘door opened’)
with help text (e.g. ‘close the door’) and severity (e.g. major). These alarm properties can be
assigned to these inputs via HiProvision. The normal behavior of the inputs can be config-
ured as ‘no current detected’ or ‘current detected’ via HiProvision as well. Table 4 shows the
pin allocations for the DI connector. A standard Ethernet cable can be used on this connect-
or.
Furthermore, two input LEDs DI1/2 are available, see Table 3. A DI LED is lit when current is
detected on the input.
Figure 9
DI, DO RJ45 Connector
Table 5
DI Pin Allocation
Pin
DI (Input) Description
1
In1a
2
In1b
3
---
4
In2a
5
In2b
6
---
7
---
8
---
Inputs a and b are symmetrical. E.g. input1 (=In1), make a shortcut between pin In1a and
In1b on the input to activate the input
à
current flows through the input, see figure below;
1
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