Electrical Data; Temperature Sensors - Pentair DIGITRACE NGC-20-C-E Installations-, Betriebs- Und Wartungsanleitung

Special Conditions for Safe Use
Environmental
Temperature range controller
Temperature range limiter
Ambient operating temperature
Storage temperature
Enclosure
Protection
Material
Installation position

Electrical data

Power supply & own power consumption
Connection terminals
L, N and PE terminals
Alarm output terminals
Pt100 (RTD) terminals
RS-485 communication
Internal Earth stud
Contact lifetime
Alarm output relay
Electromagnetic compatibility
Electrical safety
Vibration & Shock

Temperature sensors

Type
Quantity
NGC-20 INSTALLATION MANUAL
Cable entry devices shall be suitably certified and maintain the IP66 minimum of the
enclosure. Unused cable entries must be filled with suitable certified stopping plugs.
Not more than one single or multiple strand wiring lead shall be connected into either
side of the terminals.
Leads connected to the terminals shall be insulated for the appropriate voltage and this
insulation shall extend to within 1 mm of the metal of the terminal throat.
When used in dust atmospheres any dust layers occurring shall have a maximum depth
of no greater than 50 mm.
The max permitted current of the Non IS alarm contacts is 3A.
The earth pillar adjacent to the RTD connectors must be used only for RTD cable screens.
The external RTDs must be capable of withstanding a 500V test to earth.
From –80 to +700°C in steps of 1K
From –60 to +599°C in steps of 1K (NGC-20-CL-E only)
From –40°C to +50°C in T5 and from –40°C to +56°C in T4
From –55°C to +80°C
DigiTrace NGC-20-C(L)-E units can be installed directly on the pipe via an appropriate
support bracket as long as the maximum permitted ambient temperature is not
exceeded. Alternatively, units can be mounted on any stable structure via the
molded holes in the enclosure.
IP66 to IEC-60529
Glass fiber reinforced polyester with internal earth plate on the bottom
Any position allowed, typical use with glands facing down.
100 V to 254 V +/-10 % 50/60 Hz.
20 VA max.
All cage clamp style connection terminals:
9 pc (0.2 to 6 mm²)
3 pc (0.2 to 2.5 mm²)
12 pc (0.2 to 1.5mm²)
7 pc (0.2 to 1.5mm²)
1 pc (Max 6 mm²)
500 K operations at 25 A / 254 VAC (resistive load)
Contact rated 254 VAC / 3A
Relay output is software programmable to open, close or to toggle in case of alarm.
EN 61000-6-2:2005 (Gen. Immunity standard for industrial environments)
EN 61000-6-3:2007 (Gen. Emission standard for residential, commercial and light industrial)
EN 61000-3-2-2006 (Limits for harmonic current emissions)
EN 61000-3-3:1995+A1:2001+A2:2005 (limitation of voltage fluctuations and flicker)
EN 61010-1, Category III, Pollution degree 2.
Shock to EN 60068-2-27: 1/2 sine wave of 11 ms duration, 15 g
Vibration to EN 60068-2-6 / sine wave 10 to 150 Hz (p-p), 2 g
100 Ω platinum, 3-wire, α = 0.00385 Ω/°C. Can be extended with a three core shielded or
braided cable of maximum 20 Ω lead resistance per conductor.
Two RTD inputs for the controller plus one independent temperature input for the limiter.
In case it is required, more RTDs can be monitored with optional RMM2 units.
All temperature sensors are permanently monitored for "sensor open" and "sensor
break"
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