Mounting On Din Rail - Distech Controls EC-BOS-8 UUKL Installation Manual

•
Mounting on a 35mm wide DIN rail is recommended. The EC-BOS-8
UUKL unit base has a molded DIN rail slot and locking clip, as do
option modules. DIN rail mounting ensures alignment of the
connectors between all devices.
•
Up to four (4) option modules are supported. See
Considerations," page 2.
Capacity
•
Dimensions of a unit with option modules are shown in
Mounting dimensions of the EC-BOS-8 UUKL and option
"Tab Mounting
modules. Also see

Mounting on DIN Rail

Prerequisite: The 35mm DIN rail should be securely mounted, with at
least two screws near the rail ends. The microSD card must be installed
in the EC-BOS-8 UUKL. See "Preparation," page 2.
1. Pull the EC-BOS-8 UUKL locking clip down.
2. Tilt the EC-BOS-8 UUKL to hook over the DIN rail.
3. Push down and in on the unit, fastening to the rail.
4. Push the locking clip up to secure.
5. Mount any option module onto the DIN rail in the same way.
6. Slide the module firmly into the EC-BOS-8 UUKL connector to seat.
Repeat for other modules as needed (4 maximum).
7. Carefully secure both ends of the final assembly with DIN rail end-
clips provided by the DIN rail vendor.
To remove a unit from the DIN rail, pull down its locking clip.
Then swing the bottom out and lift the unit away from the
DIN rail.
Wiring
Earth Ground and Power
Earth grounding provides protection from electrostatic discharge or other
forms of EMI.
4/10
"Option Module and
Figure 4:
Dimensions," page 9.
Figure 5: Earth ground and power options.
Depending on power source used (see
ground and power options.):
•
2.1 (AC): Dedicated 24V transformer required, with neither side of the
transformer secondary tied to ground.
•
2.2 (DC): Polarity is unimportant (uses onboard diode bridge), with
neither leg tied to ground.
•
2.3 (EC-BOS-8 UUKL Wall Plug Module) instead of wiring 24V to 2-
position connector.
Wiring Earth Ground and Power
Before making power terminations, de-energize the 24V
power source. Do not restore power until completing all
other mounting and wiring. See
Checkout" on page 6.
Prerequisite: A nearby earth grounding point.
1. Install the included earth ground wire to the EC-BOS-8 UUKL earth
ground spade lug, and terminate the other end to a nearby earth
ground.
2. Unplug the EC-BOS-8 UUKL 2-position power connector plug and
terminate the 24V supply source (AC or DC) to the connector.
Leave connector unplugged for now.
Figure 6: Communications ports on EC-BOS-8 UUKL.
1 RS485 ports and bias switches. See
"RS485 Bias
Switches".
2
WiFi adapter, settings switch, and antenna. See
3 Ethernet ports, 10/100-Mbit, RJ-45. See the
section on page 6.
4 Earth ground and 24V power input. See
Power" on page 4.
and
Figure 5: Earth
"Power Up and Initial
"RS485 wiring" and
" ".
WiFi
"Ethernet
Wiring"
"Wiring Earth Ground