Honeywell XNX-AM Series, Техническое руководство, Страница: 48 / 207

XNX Universal Transmitter
Installation and Operation 46
mV Personality Wiring
A transmitter with the mV personality board allows interface to
the Multi Purpose Detector (MPD), 705, and Sensepoint devices.
Caution:
See Specifications to ensure that the transmitter and the mV sensor have the
appropriate approvals prior to commissioning.
Caution: Verify that the mV sensor being installed has compatible threads (3/4 NPT or
M25).
CAUTION
!
Read the Wiring the Transmitter section which defines the
power and 4-20mA output connections that are common to all
personalities.
Connections from the mV sensor to the transmitter are made
via a single pluggable terminal block. Honeywell Analytics
recommends that an 8” (20 cm) service length for wiring be
maintained. The wire colors for the connections for each sensor
type are shown in the table on this page.
Verify that wires for 4-20mA outputs are routed away from
sources of noise such as relay wires.
Note:
The black and red wires from the MPD are not used with the mV personality
board. Ensure that they are properly isolated from live connections. Do not cut the
wires.
NOTE
!
Caution: Dress the wires properly so that cabling does not contact switches 1 or 2
on the back of the POD. Do not force the POD into the enclosure. Doing so may result
in damage to the wiring or the POD. If resistance is felt, wires may be preventing the
POD from being properly positioned.
CAUTION
!
HART
20 mA
Operation
LOCAL
J1
S1
+V 1-1
mV TB-1
MPD, 705
Sensepoint
4-20mA
HART
16-32 VDC
6.5W max.
1-2
-V 1-3
1-4
+mA 1-5
-mA 1-6
Sense 1-7
0v 1-8
Ref 1-9
S1
Source
Sink
Isolated
S2
S2
J1 - Local HART Option Connector
1
2 3 4 5
6
7 8 9
internal
grounding lugs
S1 and S2 - 20mA Output
Jumper Switch
S2 S1
▼ ▼
Isolated
▲
Sink
▼
Source
▼
▲
XNX mV TB-1
Figure 43. mV personality board terminal blocks and jumper switches
TB-1 Desc.
Wire Color from Sensor
mV Catalytic Bead Sensor
Sensept
PPM*
mv MPD w/IR Sensor
MPD
705
705HT
Sensept
Senspt HT
IR 5%
IR Flam
CO
2
CH
4
Pins 1-6
See subsections in the 4-20 mA Output, Common Connections, and Power Settings section for pin
identification
7 Sense Brown Red Brown
8 0v White Green White
9 Ref Blue Blue Blue
*Internal earth ground; approximately one inch of the black sheath that contains the Sensepoint PPM’s four wires (red, blue,
green, silver) must be split to allow the silver grounding wire to reach the internal grounding lugs.