Automation Products Group, Inc.
1025 W 1700 N Logan, UT 84321
Thank You
Thanks for purchasing a RST-5003 control module from us! We appreciate your business and
your trust. Please take a moment to familiarize yourself with the product and this manual before
installation. If you have any questions, at any time, don’t hesitate to call us at 888-525-7300.
APG warrants its products to be free from defects of material and workmanship and will, without
charge, replace or repair any equipment found defective upon inspection at its factory, provided
the equipment has been returned, transportation prepaid, within 24 months from date of shipment
from factory.
THE FOREGOING WARRANTY IS IN LIEU OF AND EXCLUDES ALL OTHER WARRANTIES NOT
EXPRESSLY SET FORTH HEREIN, WHETHER EXPRESSED OR IMPLIED BY OPERATION OF LAW OR
OTHERWISE INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTIES OF MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE.
No representation or warranty, express or implied, made by any sales representative, distributor,
or other agent or representative of APG which is not specically set forth herein shall be binding
upon APG. APG shall not be liable for any incidental or consequential damages, losses or expenses
directly or indirectly arising from the sale, handling, improper application or use of the goods or
from any other cause relating thereto and APG’s liability hereunder, in any case, is expressly limited
to the repair or replacement (at APG’s option) of goods.
Warranty is specically at the factory. Any on site service will be provided at the sole expense of the
Purchaser at standard eld service rates.
All associated equipment must be protected by properly rated electronic/electrical protection
devices. APG shall not be liable for any damage due to improper engineering or installation by the
Purchaser or third parties. Proper installation, operation and maintenance of the product becomes
the responsibility of the user upon receipt of the product.
Returns and allowances must be authorized by APG in advance. APG will assign a Return Material
Authorization (RMA) number which must appear on all related papers and the outside of the
shipping carton. All returns are subject to the nal review by APG. Returns are subject to restocking
charges as determined by APG’s “Credit Return Policy”.
1.Description
2. How To Read Your Label
3. Warranty
4. Installation Procedure
5. Dimensions
6. Power Supply Wiring
Diagrams
7. Modbus System Wiring
Diagrams
8. Embedded Webpage
9. General Care
10. Repair Information
11. Removal Instructions
Table of Contents
4Installation Procedure
Installing your RST-5003 is easy if you follow a few simple steps:
• Connect any 4-20 mA sensor, relays, or switched inputs rst.
• Connect RST to Ethernet/network
• Connect independant 12-28 VDC supply if not using POE.
• Connect and set up one Modbus sensor at a time.
Please keep the following limitations in mind:
• Up to 10 Modbus sensors can be connected to the RST-5003 in any combination.
• Only one 4-20 mA sensor can be connected to the RST-5003.
5Dimensions
NOTE: Scan the QR code to the below to visit www.apgsensors.com/support.
APG Support Website
Part # 122950-0012
Doc #9004245 Rev A
Each label comes with a full model number, a part number, and a serial number. The model
number for the RST-5003 will look something like this:
The model number correlates with all the congurable options and tells you exactly what you have.
Compare the model number to the options on the datasheet to identify your exact conguration.
You can also call us with the model, part, or the serial number and we can help you.
SAMPLE: RST-5013
The RST-5003 Web Enabled Control Module oers a wide degree of integrated and exible remote
and local control and monitoring for your system. The RST-5003 can control up to ten APG Modbus
sensors--any combination of level, pressure, magnetostrictive and ultrasonic--along with one
4-20 mA sensor, and two input or out relay terminals. All readings are available for control and
monitoring via TCP/IP for local or remote network access. The RST-5003 also had exible power
options: it can use either POE or an independent 12-28 VDC power source.
1Description
2How To Read Your Label
3Warranty
2
4
V
BG
N
D
A
7/8” 4”
4 1/2”
IMPORTANT: Each Modbus sensor must be added to the network individually and
assigned a unique Sensor Number before the next sensor can be added.
NOTE: If you can control power to each Modbus sensor individually, you can connect
them all simultaneously, and power them on individually.
6Power Supply Wiring Diagrams
To Network
Connection
Input for supply
voltage when
