Phoenix Contact MINI MCR-2-UI-UI 3-Way Signal Conditioner (2902037)
Overview
The Phoenix Contact MINI MCR-2-UI-UI (item number 2902037) is a 3-way isolating signal conditioner from the MINI Analog Pro family. In a housing only 6.2 mm wide, the Phoenix Contact MINI MCR-2-UI-UI electrically isolates, converts, amplifies and filters unipolar and bipolar analog standard signals. Input and output ranges are selected with DIP switches, and the measuring ranges are calibrated, so no adjustment is needed after a range changeover. The device supports fault monitoring and NFC communication, and it carries ATEX and IECEx approvals for installation in Zone 2 as well as UL Class I, Division 2 approval.
Seven Star LLC supplies the Phoenix Contact MINI MCR-2-UI-UI to instrumentation contractors, system integrators and plant maintenance teams in the Sultanate of Oman and across the GCC, from our office in Muscat for analog signal interfacing in control and safety systems.
Why Signal Isolation Matters
As general engineering background, analog loops between field instruments and control systems often suffer from ground loops, potential differences between plant areas, electrical noise and incompatible signal ranges. A 3-way isolator separates input, output and power supply galvanically, breaking ground loops and protecting expensive I/O cards from transients. The Phoenix Contact MINI MCR-2-UI-UI provides reinforced insulation between input, output and supply according to IEC/EN 61010-1, with a rated insulation voltage of 300 Vrms and a test voltage of 3 kV AC for 60 seconds.
Beyond isolation, the Phoenix Contact MINI MCR-2-UI-UI converts between signal types. A 0 to 10 V output from a drive, for example, can be converted into a 4 to 20 mA signal for a DCS input, or a bipolar ±10 V position signal can be shifted into a unipolar range. The maximum transmission error of the Phoenix Contact MINI MCR-2-UI-UI is 0.1 % of the configured output range, with a typical temperature coefficient of 0.01 %/K.
Configurable Input and Output Ranges
According to the Phoenix Contact data sheet, the voltage input of the Phoenix Contact MINI MCR-2-UI-UI can be set via DIP switch to 0 to 5 V, 1 to 5 V, −5 to 5 V, 0 to 10 V, 2 to 10 V, −10 to 10 V, 0 to 20 V, 4 to 20 V, −20 to 20 V, 0 to 24 V, 4.8 to 24 V, −24 to 24 V, 0 to 30 V, 6 to 30 V or −30 to 30 V. Current inputs of 0 to 20 mA, 4 to 20 mA and −20 to 20 mA are also available. The voltage input resistance is above 1000 kΩ, and the current input resistance is approximately 63 Ω.
On the output side, the Phoenix Contact MINI MCR-2-UI-UI offers 0 to 5 V, 1 to 5 V, −5 to 5 V, 0 to 10 V, 2 to 10 V and −10 to 10 V voltage ranges, and 0 to 20 mA or 4 to 20 mA current ranges. The current output drives loads up to 600 Ω at 20 mA, and the voltage output needs a load of at least 10 kΩ. A low-pass filter in the Phoenix Contact MINI MCR-2-UI-UI with a limit frequency of 30 Hz or 5 kHz is selected by DIP switch; with the 30 Hz filter, the step response from 10 to 90 % is below 12 ms.
Power Supply and Mounting
The Phoenix Contact MINI MCR-2-UI-UI is powered from a nominal 24 V DC supply within a range of 9.6 to 30 V DC. Supply can be bridged between adjacent modules with the DIN rail connector ME 6,2 TBUS-2 1,5/5-ST-3,81 GN (item 2869728), which snaps onto a 35 mm DIN rail to EN 60715 and removes the need for individual supply wiring. Typical current consumption is 25 mA at 24 V DC with current output. Screw connection terminals on the Phoenix Contact MINI MCR-2-UI-UI accept conductors from 0.14 to 2.5 mm², and a green LED indicates the presence of supply voltage.
Key Features
- 3-way galvanic isolation with reinforced insulation and 3 kV AC test voltage.
- Calibrated, DIP-switch selectable unipolar and bipolar voltage and current ranges.
- Maximum transmission error 0.1 % of the configured output range.
- Selectable 30 Hz or 5 kHz limit frequency.
- Wide supply range of 9.6 to 30 V DC with DIN rail connector bridging.
- 6.2 mm housing width for high channel density.
- Operating temperature −40 to +70 °C.
- ATEX II 3 G Ex ec ic IIC T4 Gc, IECEx, UL Class I, Div. 2 and DNV GL approvals.
Applications in Oman and the GCC
In oil and gas production stations, refineries, power and desalination plants across Oman and the GCC, the Phoenix Contact MINI MCR-2-UI-UI is used to isolate and convert analog signals between field transmitters, variable speed drives, analyzers and PLC or DCS cards. Typical tasks include splitting ground potentials between a motor control centre and a control room, adapting a 0 to 10 V speed reference to a 4 to 20 mA input, and filtering noisy signals before they reach an I/O card. The Zone 2 approvals listed in the data sheet allow installation in suitable enclosures in Zone 2 hazardous areas, within the certificate conditions.
Seven Star LLC also supplies related interface products such as the PR electronics 4116 universal transmitter, the Moore Industries SIX signal isolator, converter and repeater and the Phoenix Contact TTC-6-2X1-24DC-UT surge protector for protecting the same analog loops against surges.
Technical Specifications
The following data for the Phoenix Contact MINI MCR-2-UI-UI is taken from the Phoenix Contact product data sheet for item 2902037.
| Parameter | Specification |
|---|---|
| Item number | 2902037 |
| Product type / family | Input signal conditioner / MINI Analog Pro |
| Channels / configuration | 1 channel / DIP switches |
| Electrical isolation | 3-way, reinforced insulation, 300 Vrms rated, 3 kV AC test (50 Hz, 60 s) |
| Voltage input | DIP-selectable ranges from 0 to 5 V up to −30 to 30 V; max. 33 V; input resistance above 1000 kΩ |
| Current input | 0 to 20 mA, 4 to 20 mA, −20 to 20 mA; max. 24 mA; approx. 63 Ω |
| Voltage output | 0 to 5 V, 1 to 5 V, −5 to 5 V, 0 to 10 V, 2 to 10 V, −10 to 10 V; load at least 10 kΩ |
| Current output | 0 to 20 mA, 4 to 20 mA; max. 22 mA; load up to 600 Ω at 20 mA |
| Limit frequency (3 dB) | 30 Hz or 5 kHz via DIP switch |
| Step response (10 to 90 %) | below 12 ms with 30 Hz filter |
| Transmission error | 0.1 % of configured output range maximum |
| Temperature coefficient | 0.01 %/K |
| Supply voltage | 24 V DC nominal; 9.6 to 30 V DC |
| Current consumption | 25 mA at 24 V DC; 54 mA at 12 V DC (current output, incl. load) |
| Dimensions (W × H × D) | 6.2 × 109.81 × 119.2 mm |
| Connection | Screw, M3, 0.14 to 2.5 mm² |
| Ambient temperature | −40 to +70 °C operation; −40 to +85 °C storage |
| Degree of protection | IP20 |
| Approvals | ATEX BVS 19 ATEX E 047 X; IECEx BVS 19.0041X; UL 508 Listed, Class I, Div. 2; DNV GL |
How to Order
To request a quotation for the Phoenix Contact MINI MCR-2-UI-UI, contact the Seven Star LLC instrumentation team with the quantity and the signal ranges you need. We provide model selection support from Muscat, share the manufacturer data sheet and support projects throughout Oman and the GCC.
- Datasheet Phoenix Contact MINI MCR-2-UI-UI (2902037) Product Data Sheet Download
Phoenix Contact parts listed on this page
Three product groups are represented. The TTC-6-2X1-24DC-UT (order number 2906799) is a surge protection device with screw connection for two 24 V DC signal wires that share a common reference potential. The QUINT-PS/1AC/24DC/10 is a single-phase DIN rail power supply delivering 24 V DC at 10 A. The PSR-SCP-24DC/ESP4/2X1/1X2 (order number 2981020) is a single-channel PSR safety relay for emergency stop and safety door monitoring, with two enabling current paths and plug-in screw terminals.Ordering Phoenix Contact components: what we need
Phoenix Contact items are ordered by a seven-digit order number together with the type designation, both printed on the side of the module. Send both, plus the quantity. If the number is unreadable, send the type text and a photo. For power supplies, state input voltage, output current and whether the unit runs in parallel or with a redundancy module. For buyers in the GCC replacing an older unit, we check the manufacturer's documentation for the listed successor type.Browse Phoenix Contact products by category: Isolator & Barrier, Power Modules, Automation Accessories.
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