Greystone Energy Systems GT-AI-420 Series User manual

Page 1
INTRODUCTION
The analog isolation module is a 2 wire loop-powered 4-20 mA signal isolator
with one input/output channel. It will accept one analog current or voltage input
signal, isolate it and sink a current output signal. The input has several xed ranges
for various applications.
The device derives operating power from the output current loop that is provided by
the receiving device and has an on-board transformer that provides complete input/
output signal isolation.
Both the input and output are sinking type and the input signal types are easily
selected with DIP switches.
The product comes with standard snap-track for easy mounting
BEFORE INSTALLATION
Read these instructions carefully before installing and commissioning the device. Failure to follow these instructions may result in product
damage. Do not use in an explosive or hazardous environment, with combustible or ammable gases, as a safety or emergency stop device
or in any other application where failure of the product could result in personal injury. Take electrostatic discharge precautions during
installation and do not exceed the device ratings.
MOUNTING
The snap-track device may be mounted in any position. Use only ngers to remove the
PCB from the snap-track, do not pry on the PCB with tools. Do not ex the PCB during
removal or installation. Slide the PCB out of the snap-track or push against one side of
the snap-track and lift the PCB out. See Figure 1. Ensure any metallic mounting hardware
does not contact the underside of the PCB.
Avoid mounting in areas where the device is exposed to vibrations or rapid temperature
changes. Mount the snap track with the PCB removed using two screws as shown in
Figure 2.
Once the snap track is mounted, place the bottom part of the PCB into the bottom track
and gently press on the top corners of the PCB untli it snaps into place in the top track,
see Figure 4.
Figure 1
Figure 3
Figure 2
IN-GE-GTAI420XXX-01-02 03/19 Copyright © Greystone Energy Systems, Inc. All Rights Reserved Phone: [phone] Web: www.greystoneenergy.com
Analog Isolation Module
GT-AI-420 Series - Installation Instructions

Page 2
PRINTED IN CANADA
WIRING
• Deactivate any power supplies until all connections are made to the device to prevent electrical shock or equipment damage.
• Follow proper electrostatic discharge handling procedures when installing the device.
• Use 22 AWG shielded wiring for all connections and do not locate the device wires in the same conduit with wiring used to supply inductive
loads such as motors.
• Make all connections in accordance with national and local codes.
• The analog input signal is connected to the IN+ and IN- terminals and the analog output signal is connected to the OUT+ and OUT- terminals.
The input and output signals are completely isolated from each other.
SPECIFICATIONS
GENERAL
Power Supply....................................... Powered by loop-current (15-30 Vdc)
Isolation ................................................. 1000 Vrms input to output
Accuracy ................................................ ±0.1% typical
Operating Conditions ....................... 0 to 50°C (32 to 122°F), 5 to 95 %RH non-condensing
Storage Conditions............................ -30 to 70°C (-22 to 158°F), 5 to 95 %RH non-condensing
Wiring Conditions .............................. Screw terminal block (12 to 24 AWG)
Weight.................................................... 56gm (1.98 oz)
Enclosure............................................... Snap track mounting, 61mm L x 83mm W (2.4" x 3.25")
Country of Origin................................ Canada
INPUT SIGNAL
Input Voltage Ranges........................ 0-5, 0-10, 1-5, and 2-10 Vdc
Input Voltage Impedance................ >10 KΩ
Current Signal Type............................ Sink (external transducer generates 4-20 mA)
Input Current Ranges........................ 0-20 and 40-20 mA
Input Current Impedance................ 250 Ω
OUTPUT SIGNAL
Output Current Range...................... 4-20 mA
Output Current Impedance............ 750 Ω max with 24 Vdc supply
Current Signal Type............................ Sink (requires a loop power supply)
Study the wiring diagrams for proper connections with various input/output signal types and
with both sinking or sourcing applications.
FACTORY CONFIGURATIONS
The Isolation Module is preset for 4-20 mA input / 4-20 mA output. The input signal may be
changed by using the DIP switches as shown in Figure 5.
CALIBRATION
The isolator is factory calibrated to ±0.1% accuracy on the 0-5 vdc input type. Using any other
range will result in a transfer accuracy or <±1%. If a higher accuracy signal is required simply
apply the full-scale input signal and adjust the output signal to 20.00 mA using the calibration
pot.
Calibration pot
DIMENSIONS
61mm
2.4"
83mm
3.25"
Figure 4
+24 Vdc
Input
OUT+
OUT -
4-20 mA Receiver
Out
Power
IN+
IN -
4-20 mA Transmitter
Power Supply
+24 Vdc
Common
Out
Common
IN +
IN -
0-10 Vdc Transmitter
Input Signal Type S1 S2 S3
0-5Vdc OFF OFF OFF
0-10 Vdc OFF ON OFF
1-5 Vdc OFF OFF ON
2-10 Vdc OFF ON ON
0-20 mA ON OFF OFF
4-20 mA ON OFF ON
S1
S2
S3
INPUT TYPE
0-5 Vdc Shown
Figure 5
IN-GE-GTAI420XXX-01-02 02/19 Copyright © Greystone Energy Systems, Inc. All Rights Reserved Phone: [phone] Web: www.greystoneenergy.com