Varec Data Entry Terminal 8620 Installation and..., Installation And Operation Manual

Preparing for Installation

6

Installation and Operations Manual

Before installing/repairing any wiring to the 8620 DET, make sure that the power is turned off 

at the main circuit breaker or switch. The power switch should be locked in the OFF position and 

labeled to prevent other personnel from turning the power on during installation.

Do not apply power until the 8620 DET is properly grounded.

Do not apply power unless the environment is known to be non-hazardous.

Incorrect field wiring connections can damage the 8620 DET electronics and cause system 

malfunctions.

2.4

Unpacking

Varec’s 8620 DET(s) are shipped fully assembled and ready for installation.

To unpack the 8620 DET, follow the steps below:

1. Place the shipping container on a secure bench.
2. Open the shipping container, taking care not to damage the contents.
3. Carefully remove the 8620 DET from the shipping container and place it on the bench.
4. Inspect the 8620 DET for shipping damage. Report any damage to the carrier and Varec.

Note If the 8620 DET must be stored prior to installation, it should be repacked in its ship-

ping container and stored in a temperature-and-humidity-controlled environment. 

2.5

Installation 

To install the 8620 DET, follow the steps below:

1. Verify proper 8620 DET configuration for the RS-232, RS-422/485, or Ethernet protocol.
2. Ensure proper grounding of the 8620 DET. 
3. Ensure proper mounting of the 8630 DET. Refer to Figure 2-1 on page 7 for dimensions 

and mounting holes.

4. Based on the application (trucks, cars, and pedestrians), ensure that the 8620 DET can be 

mounted at a suitable height. 

5. Install proper mounting hardware (pole, stand, or wall).
6. Install the 8620 DET to the mounting hardware. The mounting hardware must be capable 

of supporting the 8620 DET. If mounted to a wall with stud framing, make sure the fasten-

ers are securely mounted into the studs.

7. Run the conduit and wiring to the 8620 DET. To maintain the Ingress Protection rating of 

the 8620 DET, waterproof conduit connections must be used.

8. Power up and verify communications. 

Note Quality electrical wiring is necessary for proper operation. Poor quality electrical wir-

ing may cause a drop in the supply voltage. For DC-powered units, verify that the voltage 

at the DET during startup and operation is within the recommended operating voltage range 

of 24 to 48 VDC.