TE Technology TC-720 - Manual (Page 11)

STATUS INDICATORS
The controller has three light emitting diodes (LED’s) to indicate an alarm, active computer communications, and controller
operation. An alarm is indicated by the orange LED, active computer communication by the blue LED, and controller
operating by the green LED.
• The alarm LED is orange and flashes on and off when there is an active alarm.
• The communication LED is blue and lights when the controller is sending or receiving data from a computer.
• The green LED (under the cover of the TC-720 and uncovered in the OEM version) blinks to indicate the controller
is on and operating.
The TC-720 is available in an OEM version, model TC-720 OEM. This is a basic version of the controller for Original
Equipment Manufacturers (OEM’s). It is intended to be used in locations where the controller can be protected by a
secondary enclosure and where the display, keypad, and box cover are not needed. The TC-720 OEM controller is the basic
control circuit from the TC-720 mounted on an aluminum plate. One MP-3193 thermistor, software, and instruction
manual on CD are included with each controller.
TC-720 OEM
The TC-720 OEM uses the same main circuit board found in the TC-720. The connector numbers and wiring are the same
for both versions of the controller. The Schematics, Hookup Diagrams, and Wiring Connections presented in this manual
are the same for both controllers; however, only the TC-720 version of the controller is depicted for clarity.
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