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8620 Driver Entry Terminal
Varec, Inc. 11
Power
To connect DC or AC power to the 8620, connect the power wires to the appropriate terminals
supplied with the 8620 DET.
Note Before connecting power wires to the 8620 DET, ensure that power is switched off
and that the 8620 DET is correctly grounded.
DC Wiring
1. Connect the 20 - 72 VDC positive wire to the bottom of the terminal switch as shown in
Figure 3-1.
2. Connect the negative wire to Terminal Block Black.
AC Wiring
1. Connect the hot wire to Terminal Switch as shown in Figure 3-1.
2. Connect the neutral wire to Terminal as shown in Figure 3-1.
3. Connect the ground wire to the ground.
Communications
RS-485 is the default setting used for Com 2 as shown in Figure 3-1.
RS-422 and RS-485 Wiring — Com 2
Note Com 1, Com 3, and Com 4 are all standard RS-232 Ports. All Com ports are standard
DB-9 male connectors. Com 2 also supports RS-232 as properly configured.
DB-9 Connector on I/O Bracket
Pin Pin Name Signal Type
1422-RXD- IN
2 422-RXD+ IN
3 485-422-TXD+ OUT
4 485-422-TXD- OUT
Table 3-1: 4-Pin Connectors for RS-422 and RS-485 Communication Protocols