Product Guide
VESDA ECO Detector by Xtralis
12
Installation
17898_05
Upon removing the lid, the two 8 way connection terminals are exposed. The pin
numbering of these connections is indicated in Figure 5 below.
Figure 5. Detector Internal Connector Terminal Allocations
The electrical functions of the terminals are as follows
SKT1
Pin 1
Relay 1, Normally Closed, Volt Free Contact
SKT1
Pin 2
Relay 1, Normally Closed, Volt Free Contact
SKT1
Pin 3
Relay 2, Normally Closed, Volt Free Contact
SKT1
Pin 4
Relay 2, Normally Closed, Volt Free Contact
SKT1
Pin 5
Relay 3, Normally Closed, Volt Free Contact
SKT1
Pin 6
Relay 3, Normally Closed, Volt Free Contact
SKT1
Pin 7
Relay 4, Normally Open, Volt Free Contact
SKT1
Pin 8
Relay 4, Normally Open, Volt Free Contact
Note . “Normally” above refers to the state when the ECO is unpowered.
SKT2
Pin 1
RS485 Signal A ( Modbus D0 )
SKT2
Pin 2
RS485 Signal B ( Modbus D1 )
SKT2
Pin 3
Power Supply Input (Nom24V)
SKT2
Pin 4
Power Supply return
SKT2
Pin 5
Cable Screen Termination
SKT2
Pin 6
Digital Input/Open Collector Output
SKT2
Pin 7
4-20mA Current Output source A
SKT2
Pin 8
4-20mA Current Output source B
The specific details of the connection to each function is detailed in the following
sections