EC-BOS-6
AX
Mounting and Wiring Instructions
Revised: February 2008 Part Number: 05DI-HIBS6AX-10
Wiring Details
Power Wiring
12
Caution Do not connect both the EC-WPM-XX and EC-NPB-PWR/-UN supplies at the same time, or
equipment damage may result.
If desired, you can use the wall mount EC-WPM-XX in your office (to initially commission the EC-BOS-6
AX
),
and then install the EC-BOS-6
AX
at the job using an EC-NPB-PWR/-UN module. The following sections
provide more details:
• EC-WPM-XX (Wall Power Modules)
• EC-NPB-PWR (24Vac-powered in-line module)
• EC-NPB-PWR-UN (90-263Vac powered in-line module)
EC-WPM-XX
All models of wall power modules (US, EU, UK) are self-contained, isolated, switching power supplies
designed to plug into a standard building power receptacle of appropriate voltage. To supply power to the
EC-BOS-6
AX
, you then simply plug the barrel connector plug from the EC-WPM-XX into the barrel power
connector on the EC-BOS-6
AX
base board (see Figure 5 on page 15).
Caution Do not plug the barrel connector plug from the EC-WPM-XX into the EC-BOS-6
AX
until all other
mounting and wiring is completed. See “Power Up and Initial Checkout,” page 16.
EC-NPB-PWR
Using the EC-NPB-PWR module lets you power the EC-BOS-6
AX
from a dedicated Class 2, 24Vac
transformer, or from a 24Vdc power supply. If installing EC-Net
AX
IO-16 modules, the EC-NPB-PWR installs
as tghe last (end) module in the chain. See
Note If powering from the transformer, do not power any other equipment with it. Otherwise, conducted noise
problems may result. Also, do not ground either side of the transformer’s secondary.
Located at the bottom of the power module is a 2-position power connector, and an earth ground spade lug, as
shown in Figure 3.
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