Anhui Maoshu Instrument Co., Ltd
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MS7041 on-site power distribution signal input isolator (one in, one out)
MS7041 on-site power distribution signal input isolator (one in, one out) I. Characteristics ● Provides a driving voltage of 16.5-28V to the transmitt
Product details

MS7041 on-site power distribution signal input isolator (one in, one out)


1、 Characteristics
Provide a driving voltage of 16.5-28V to the transmitter.
Isolate and transmit the 4-20mA signal of the transmitter.
You can choose to output 4-20mA or 1-5V signals, or other required DC signals.
Modular core design, no need for zero and full adjustment.
Equipped with a working power indicator light.
Single channel, one input and one output, input circuit short circuit protection.
● Plug and unplug terminal block, DIN rail card installation
2、 Description
① MS7041 on-site power (distribution) signal isolator is used to provide isolated power voltage to transmitters on site, and convert the 4-20mA signal generated by the transmitter into the required DC signal through this isolator to the control system or other intelligent instruments.
② This isolator requires independent power supply, with electromagnetic isolation between the power supply input circuit output circuit.
3、 Technical specifications

Product model: MS7041
● Model specifications (code)
The code indicates the range of signal input or output, and users can freely choose it when placing an order (see selection spectrum).
● Working power supply
Power wiring: independent wiring terminals 13-, 14+, can be plugged and unplugged with power on
Power supply voltage: 20~35VDC
Current loss:<50mA at 24VDC
Power indicator: LED lights up when powered on; green
● Input circuit
Input channel: Terminal 1, 2, 3 wiring (see terminal wiring diagram)
Transmitter signal input: 4-20mA
Distribution voltage for driving the transmitter: 16.5-28V
Input impedance: Built in input resistor 50 Ω
● Output circuit
Output channel: Terminal 10, 11, 12 wiring (see terminal wiring diagram)
Output current: 4-20mA; 0-20mA; Or specify the current range
Allowable load for current output: 0-550 Ω (4-20mA, 0-20mA output)
Output voltage: 1-5V; 0-5V; 0-10V; or specified voltage range
Voltage output impedance: Built in output resistor 250 Ω
Ripple (Vp-p): < 10mV

● Performance indicators
Standard accuracy: ± 0.1% FS
Temperature drift: ± 0.015%/℃
Response time: ≤ 1s (0 → 90%)
Stability time: ≤ 3s
Impact of power supply voltage variation: ± 0.1% (allowable voltage range)
Influence of load resistance change: ± 0.1%/250 Ω
Channel isolation: isolation between input output power supply
Insulation resistance: ≥ 100M Ω/500VDC (AC)
Isolation capability: 1500VAC/1 minute 50Hz
Electromagnetic compatibility: Complies with the relevant electromagnetic standards of IEC61000
● Environmental parameters
Working temperature: 0~+60 ℃
Storage and transportation temperature: -20 to+80 ℃
Environmental humidity: 5~+95% RH (non condensing)
● Structure and external dimensions
Structure: Card mounted modular watch core ABS material chassis plug-in terminal
Dimensions: W16 × H116 × D110 (mm), refer to the dimension diagram
Whole machine weight: approximately 110g

4、 Model selection

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5、 Dimensions and installation diagram
● Installation
1.35mm standard DIN rail card installation. Please pay attention to the stability and firmness of the card position during installation.
2. Install vertically as much as possible to facilitate heat dissipation inside the instrument.
● Typical applications
1. Used to provide distribution voltage to on-site transmitters and isolate and convert input signals.
2. Devices connected to the site: Active electrical signals from two-wire or three wire non smart transmitters.
3. Connect to the control system (or other unit combination instruments): The AI card of each DCS/PLC receives current or voltage signals.

● External dimensions
Width (thickness) x height x depth=16 x 116 x 110 (mm)

外形尺寸图.png

6、 Terminal wiring diagram
Terminal wiring: Plug and unplug terminal blocks, connected by self boosting spring type compression. The cross-sectional area of the wire shall not exceed 2.5mm2Multiple bundles or single stranded cables.

MS7041接线图.png

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