Carmanah R820-G Energy Management System Replacement Manual - Page 5

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ENERGY MANAGEMENT SYSTEM

REPLACEMENT GUIDE

2.0 Energy Management System (EMS) Overview

Relay Control/Monitoring:

EXT1 (also labelled as OUT1 on G Series wiring terminal block) – Used for Applied Information time switches

only. Pulses of voltage (relative to DC-) indicate the system is operating with no detected fault. This "heartbeat" is

used as part of Carmanah's StreetHub system monitoring through the Applied Information time switch.

EXT2 (also labelled as OUT2 on G Series wiring terminal block) – This terminal provides a steady +12 V

(nominal, relative to DC-) signal whenever the fixtures are activated and no faults are detected. This digital output

is commonly used for triggering a relay to power third party devices or overhead lighting while a fixture is active. It

is also used for certain push button applications.

Carmanah Technologies Corp. | 250 Bay St, Victoria, BC V9A 3K5, Canada | 1.250.380.0052 |

[email protected]

carmanah.com