Prepare The Electrical Connections - Emerson Rosemount 2120 Quick Start Manual
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Also See for Rosemount 2120:
- Reference manual (82 pages) ,
- Quick start manual (40 pages) ,
- Manual supplement (16 pages)
March 2022
3
Prepare the electrical connections
3.1
Cable selection
Use 26–14 AWG (0.13 to 2.5 mm
wiring is recommended for environments with high EMI (electromagnetic
interference). Two wires can be safely connected to each terminal screw.
3.2
Cable glands/conduits
For intrinsically safe, explosion-proof/flameproof, and dust-proof
installations, only use certified cable glands or conduit entry devices.
Ordinary location installations can use suitably rated cable glands or conduit
entry devices to maintain the Ingress Protection (IP) rating.
Unused conduit entries must always be sealed with a suitably rated
blanking/stopping plug.
Note
Do not run signal wiring in conduit or open trays with power wiring or near
heavy electrical equipment.
3.3
Power supply
The power supply requirements are dependent on the electronics selected.
•
Direct load switching: 20 - 60 Vdc or 20 - 264 Vac (50/60 Hz)
•
PNP/PLC electronics: 20 - 60 Vdc
•
Relay DPCO (Double Pole Changeover) electronics (standard):
20 - 60 Vdc or 20 - 264 Vac (50/60 Hz)
•
Relay DPCO electronics (12 Vdc nominal): 9 - 30 Vdc
•
NAMUR electronics: 8 Vdc
•
8/16 mA electronics: 24 Vdc
3.4
Hazardous areas
When the device is installed in hazardous areas (classified locations), local
regulations and the conditions-of-use specified in applicable certificates
must be observed. Review the Rosemount 2120
document for information.
Quick Start Guide
2
) AWG wiring. Twisted-pairs and shielded
Product Certifications
Quick Start Guide
11
