Spectrex SafEye Xenon 700S, User Manual

Page: 52 / 80

Detector Terminal Wiring
52 SafEye
TM
Xenon 700S Gas Detector User Guide
Detector Terminal Wiring 5.7
The detector has 3 output wiring options in the rear, segregated, “Exde”
terminal section, with 9 Terminals, labeled 1–9.
Option 3 is the default unless otherwise specified at the time of the order.
The following describes the function of each electrical terminal of the
detectors for all wiring options:
Table 18: Wiring Options
Wiring
Option
Terminal Number
1 2 3 4 5 6 7 8 9
3
Figure
11
(Default)
24VDC 0VDC Alarm
Relay
(1)
RS-485+
(3)
RS-485-
(3)
0–20mA
+
(4)
0–20mA -
(4)
RS-485
RTN
(6)
2
Figure
10
24VDC 0VDC Alarm
Relay
(1)
Fault Relay
(2)
Accessory Relay
(5)
not used
1
Figure 9
24VDC 0VDC Alarm
Relay
(1)
Fault Relay
(2)
0–20mA
+
(4)
0–20mA -
(4)
not used
Notes :
 The Alarm output is a N.O. contact relay (SPST).
 The contacts are closed in gas alarm state.
 The fault output is N.C. SPST relay. The contacts are closed when the
detector is in its normal operational condition.
 Used for communications network as specified in Wiring Option
Configurations, page 67.
 See Wiring Option Configurations, page 67 for more details.
 The accessory output is N.O. (SPST) relay. The accessory relay may
act in parallel with the alarm relay to activate another external
device or it may provide a warning signal, depending on the function
setup.
 Used as RTN to the RS-485 Communications port.