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D8 Series User's Guide
Chapter 2: Installation
Figure 2.13 – Power Connections with the D8 Power Supply
Connecting TB50 to the D8
Testing the System
This section explains how to test the controller after installation and prior to making field wiring
connections.
TB50 or TB18 Test
Use this procedure to verify that the TB50 or TB18 is properly connected and supplied with power:
Digital Output Test
Use this procedure to test the controller's outputs before loads are connected. If using it at another
time for troubleshooting, disconnect loads from outputs before testing.
+5V
add jumper
5V COM
+15V
V+
common
15V COM
ground
-15V
D8
Controller
Ground
green
AC Line
black
L1
120/240VAC
AC Neutral
white
L2
1. Connect the SCSI cable to the controller.
2. Connect the SCSI cable to the TB50.
1. Turn on power to the D8. The display should read Calculating checksum, then show the single-
loop display. If you do not see these displays, disconnect power and check wiring and power
supply output.
2. Measure the +5VDC supply at the TB50 or TB18:
a. Connect the voltmeter's common lead to TB50 terminal 3 or TB18 terminal 2.
b. Connect the voltmeter's positive lead to TB50 or TB18 screw terminal 1. The voltage
should be +4.75 to +5.25VDC.
1. Connect a 500Ω to 100kΩ resistor between TB50 or TB18 screw terminal 1 and a digital
output terminal. See See Table 2.8 —TB50 Connections on page 40. for TB18 connections
or See Table 2.9 – DeviceNet™ Connector on page 42. for TB 50 connections.
solid-state relay (ssr)
+
-
ssr
+
-
ssr
+
-
ssr
+
-
1 2 3 4
Serial
digital-to-analog
converter
30
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