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MA7 Unified Signal Type Distributor
Brand: Yokogawa Electric Corporation
The MA7 is a plug-in type distributor that is used in combination with a two-wire type transmitter to convert the transmitter’s 4-20 mA DC signals into isolated 4-20 mA DC current or 1-5 Vdc voltage signals.
Features- Supports BARD-800
- Provided with Power Indicator Lamp
Specifications
Accuracy
- ± 0.1 % of Span
Consumption
- 1.8 W at 110 Vdc
- 2 W at 24 Vdc
- 3.9 VA at 100 Vac
- 5.2 VA at 200 Vac
Current
- 25-35 mA - Current Limiter
Electrical Connectors
- M3.5 Screw Terminal
Enclosure, Body Material
- ABS Resin
Humidity
- 5 to 90 % RH, Non-Condensing - Operating Humidity
Input
- 40 mA DC - Max.
Input Signal
- 4-20 mA DC from 2-Wire Typical Transmitter
Insulation Resistance
- 100 MΩ min. at 500 Vdc between Input, Output, Power Supply & Grounding Terminals Mutually
Mounting
- DIN Rail Mounting
- Wall Mounted
Operating Temperature
- 0° to 50° C (32° to 122° F)
Output
- 1-5 Vdc
- 4-20 mA DC
Power Supply
- 25.25 ± 0.25 Vdc (Provided with a Current Limiter to Keep the Current between 25-35 mA) - Transmitter Power Supply
Power Supply Effect
- Up to ± 0.1 % of Span for the Regulation within Allowable Range of Each Supply Voltage Range - Effects of Power Line Regulation
Resistance
- 2 kΩ min. - Allowable Load Resistance for 1-5 Vdc
- 250 ohms - Input Resistance
- 750 ohms, Max.
Response Time
- 150 ms, 63 % Response (10 to 90 %)
Span & Zero Adjustments
- -5 to 5 % - Zero Adjustment
- 95 to 105 % - Span Adjustment
Supply Voltage
- 170-264 Vac, 47-63 Hz
- 2,000 Vac for One Minute between Input, Output, Power Supply & Grounding Terminals Mutually - Withstanding Voltage
- 24 Vdc ± 10 %
- 85-132 Vac
- 85-150 Vdc
Temperature Effect
- Up to ± 0.15 % of Span Per 10° C (18° F) Change - Effect of Ambient Temperature Variations