MS7044 on-site power signal input isolator (two in, two 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.
● Dual channel, two isolated inputs and two isolated outputs, input circuit short circuit protection.
● Plug and unplug terminal block, DIN rail card installation.
2、 Description
① The MS7044 on-site power (distribution) signal isolator provides isolated power voltage to the transmitter on site through two independent input channels, and converts and processes the 4-20mA signal generated by the transmitter through this isolator. The required DC signal is isolated and output to the control system or other intelligent instruments through two independent channels.
② This isolator requires independent power supply, with electromagnetic isolation between the power supply input circuit output circuit.
3、 Technical specifications
Product model: MS7044 |
● 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 1- input 2- output 1- output 2- 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 120g |
4、 Model selection
Ordering Notice
1. Refer to the selection example and write the order model code correctly and standardly.
2. If no code is selected, it will be recognized as the ordering combination method in Example 1.
Example 1 Input: 1 channel, 2 channels transmitter 4-20mA
Output: 1 channel 4-20mA; 2 channels 4-20mA
Order code: MS7044-P-P-A-A
Example 2 Input: 1 channel, 2 channels transmitter 4-20mA
Output: 1 channel 4-20mA; 2 channels 1-5V
Order code: MS7044-P-P-A-1
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)
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.