Earth Ground And Power; Power Up And Initial Checkout - Distech Controls EC-BOS-9 Installation Manual

Often, you only use PRI (LAN1 primary) unless you have a specific application for the other port. For example, isolating a driver's network
traffic using SEC (LAN2). Do not use SEC as the primary port. If enabling SEC, you must connect PRI and SEC to different IP subnets.
Further, a controller does not provide IP routing or a bridging operation between the two Ethernet ports.

Earth Ground and Power

Earth grounding provides protection from electrostatic discharge or other forms of EMI.
Prerequisites: A nearby earth grounding point is available.
Before making power terminations, de-energize the 24V power source. Do not restore power until completing all other mounting and wiring.
Refer to

Power Up and Initial Checkout

Figure 6: Earth ground and power options.
Depending on power source used:
1 Ground
2 Power
2.1 (AC): Dedicated 24V transformer required, with neither side of the transformer secondary tied to ground, or
3 •
2.2 (DC): Polarity is unimportant (uses onboard diode bridge), with neither leg tied to ground, or
•
2.3 (Wall-mount AC adapter) instead of wiring 24V to 2-position connector.
•
1. Install the included earth ground wire to the controller's earth ground spade lug and terminate the other end to a nearby earth ground.
2. Unplug the controller's two-position power connector plug and terminate the 24V supply source (AC or DC) to the connector. Leave the
connector unplugged for now.
Power Up and Initial Checkout
Enabling power starts a sequence of blinking LEDs. Also, the Niagara Framework logo on the cover illuminates whenever power is applied to the controller.
Prerequiste: Ensure power and ground wiring to the EC-BOS-9 are ready—see wiring
1. Apply power. To do this, do one of the following:
-
Insert the 2-position 24V power connector plug, or
-
Insert the barrel plug of the wall-mount AC adapter into an outlet.
2. Check the BEAT (heartbeat) LEDs. After power is applied, during bootup, the BEAT LED flashes at rate patterns indicated in the table below. The
patterns communicate the status of the bootup process in terms of system state, niagarad, and station. When bootup completes and the heartbeat
led shows pattern B then the controller is ready for network communication.
Pattern Blink pattern
for more details
System state
Earth Ground and Power.
Niagara daemon Station
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