2
3.1 Voltage and current output units
The Model AXD (voltage output) transducer is a 3-wire voltage device. It is operable in a 5000
Ω
load
or greater. The wires for the individual conductors is as follows:
Current output units
The Model AXD (current output) transducer is a true 2-wire, 4-20 mA current output device and delivers
rated current into any external load of 0-800 ohms. The 4-20 mA units are designed to have current
flow in one direction only -
Please observe polarity
. We suggest that the electrical cable shield be
connected to the system’s loop circuit ground to improve electrical noise rejection. The electrical
connection is as follows:
CAUTION
:
Unit is reverse excitation protected.
However, do not apply power to output lead as
this could cause permanent damage.
The AXD has a 2-wire cable, where red is
positive and black is negative.
Model AXD
Setra transducer
(4-20 mA)
Power
supply
Load
(monitor)
+
+
+
_
_
_
CAUTION: Reverse excitation will not cause damage
to the unit unless voltage applied is above 50 VDC.
However, the unit will not function if reverse wired.
Red + Excitation
Black - Excitation
+
Monitor or
Control
Device
_
Green
+ Out
White
- Out
Shield
-Out
+Out
Model AXD
Setra transducer
(Voltage Output)
Voltage
Current output
3.2 Output wiring schematics
Model AXD:
In case of electrical noise pickup we suggest connecting a 22 μF non-polar electrolytic
capacitor rated 50V between (+Exc and -Exc) terminals of power supply to improve noise rejection.
3.3 Electrical termination wiring instructions
Cable version ("XX")
Voltage
Current
Red
+Exc
+Exc/supply
Green
+Out
-Exc/return
Black
-Exc/common
N/C
White
N/C /no connect
N/C
Shield
Earth ground/system ground
Earth ground/system ground
9.1 .36
21.8 .86
71.9 2.83
22.1 .87
27.9 1.10
25.4 1.00
SOAXD1XXXPGJ7XXP1XNN
REV.
DATE
REVISION RECORD
FILE:
DWG SIZE
> 6" = ±1/16
DO NOT SCALE DRAWING
< 6" = ±1/32
THIRD ANGLE PROJECTION
ANGULAR
A
± 0° 30"
FRACTIONAL
TOLERANCES
EXCEPT AS NOTED
DECIMAL
XX = ±.01
MATERIAL
DRAWING NUMBER
OUTLINE, AXD, 7/16 SAE FITTING W/3 PIN PACKARD
TITLE
SCALE
ENGR
REV.
DATE
1
APPROVALS
DESCRIPTION
DATE
Boxborough, MA, USA
MATERIAL
1:1
INITIALS
SAINT HILAIRE
1-24-19
SOAXD1XXXPGJ7XXP1XNN_1.DRW
DRAWN BY
XXX = ±.005
1 of 1
SHEET
© SETRA SYSTEMS, INC. THIS DRAWING CONTAINS THE PROPRIETARY INFORMATION OF SETRA SYSTEMS, INC., ALL RIGHTS RESERVED. ALL UNAUTHORIZED REPRODUCTION, USE AND TRANSMISSION OF THIS DRAWING AND INFORMATION IT CONTAINS ARE STRICTLY PROHIBITED. THIS DRAWING IS SUBJECT TO RETURN TO SETRA SYSTEMS, INC., UPON ITS REQUEST.
3-pin packard connector ("P1")
Voltage
Current
A
–Exc/common
–Exc/return
B
+Exc
+Exc/supply
C
+Out
N/C
Type: P2S series 150
A
C
B
Vent ring
(Hydrophobic filter)
