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CLS200 Series User's Guide
Chapter 2: Installation
Connecting TB50 to CLS200
Testing Your 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.
Digital Input Test
Use the following procedure to test digital inputs before connecting to field devices:
1. Connect the SCSI cable to the controller.
2. Connect the SCSI cable to the TB50.
1. Turn on power to the CLS200. The display should read CALCULATING CHECKSUM then show
the bar graph display. (See Figure 3.3.) 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 or TB18 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 Table 2.7 TB18 Connections; Table 2.8 TB50 Connections for CLS204
and CLS208; or Table 2.9 TB50 Connections for CLS216.)
2. Connect the voltmeter's positive lead to screw terminal 1.
3. Connect the common lead to the digital output terminal.
4. Use the digital output test in the MANUAL I/O TEST menu to turn the digital output on and
off. (See Test Digital Output on page 94 and Digital Output Number on page 94.) When
the output is ON, the output voltage should be less than 1V. When the output is OFF, the
output voltage should be between 4.75 and 5.25V.
NOTE! By default, heat outputs are enabled. Only disabled outputs may be turned on
using the manual I/O test. To test heat outputs, set the corresponding loop to manual
mode 100% output. See Selecting the Control Status on page 56.
1. Disconnect any system wiring from the input to be tested.
2. Go to the DIGITAL INPUTS test in the MANUAL I/O TEST menu. (See Digital Inputs on
page 94.) This test shows whether the digital inputs are H (high, or open) or L (low, or
closed).
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Troubleshooting
