WIRING DETAILS Part Number 12762 Rev 1.1 | April 30, 2014
Grounding
| NETWORK CONTROLLER 3E & 6E MOUNTING AND WIRING GUIDE 15
Grounding
An earth ground spade lug (0.187") is provided on the controller base for connection
to earth ground. For maximum protection from electrostatic discharge or other
forms of EMI, connect the supplied earth grounding wire to this lug and a nearby
earth ground. Keep this wire as short as possible, see Figure 4 on page 16.
Wire the earth ground spade lug of accessory modules in the same manner.
Power Wiring
The controller must be powered by an approved 15 Vdc power source. This can be
either
1
DIN-mountable module: the NPB-PWR, a 24Vac/dc-powered module, or the
NPB-PWR-UN, a line-powered 120–240Vac module. Or, an external Class 2 wall
mount AC adapter (WPM-XXX) can be used for controller power.
Note
See
“Environmental Requirements”
on page 8 for mains supply requirements.
The controller does not include an on/off switch. To apply power, you either:
• if NPB-PWR, plug in its 2-position power connector.
• if NPB-PWR-UN, energize the AC circuit (120–240 Vac) wired to that module.
•if WPM-XXX, plug in the power connector to the controller.
Caution Do not connect both the WPM-XXX and NPB-PWR / NPB-PWR-UN
supplies at the same time, or equipment damage may result.
Power consumption depends mainly on installed I/O modules, and may vary from:
• Controller alone (with or without installed option cards): approximately 7.5 VA
(AC) or 7.5 W (DC).
• Controller (with or without installed option cards), plus four (4) T-IO-16 mod-
ules: up to 20 VA (AC) or 20 W (DC).
If desired, you can use the wall mount WPM-XXX in your office (to initially
commission the controller), and then install the controller at the job using either a
NPB-PWR or NPB-PWR-UN module. The following sections provide more details:
• “NPB-PWR,” page 15 (24Vac/dc-powered in-line module)
• “NPB-PWR-UN,” page 16 (Universal 120V–240Vac-powered in-line module)
• “WPM-XXX (Wall Mount AC Adapter),” page 17
NPB-PWR
Use the NPB-PWR module to power the controller (and if installed, T-IO-16 modules)
from a dedicated Class 2, 24Vac transformer, or from a 24Vdc power supply.
Note If there is no optional NiMH backup battery, using the NPB-PWR allows a
higher operating temperature. See “Environmental Requirements,” page 8.
1. A fourth power option is available: a T-IO-34 accessory module, which is a combination of the
NPB-PWR module and two T-IO-16 modules (plus two extra relays). Refer to its mounting and wir-
ing document for more details. For a listing of modules, see “About Accessory Modules,” page 13.
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