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Configured for precision signal conditioning in control systems, the YOKOGAWA VJA1-027-AAA0 (VJA1-027-AAA0 Signal Distributor) provides direct galvanic isolation and distribution of 4-20 mA DC input signals from two-wire transmitters into...
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Configured for precision signal conditioning in control systems, the YOKOGAWA VJA1-027-AAA0 (VJA1-027-AAA0 Signal Distributor) provides direct galvanic isolation and distribution of 4-20 mA DC input signals from two-wire transmitters into dual independent outputs.
| Parameter | Specification |
|---|---|
| Model | VJA1-027-AAA0 |
| Brand | YOKOGAWA |
| Origin | Japan |
| Weight | 0.4kg |
| Dimensions | Compact plug-in form factor |
| Operating Temp | -5 to 55 deg C |
| Power Consumption | 15-30 VDC or 100-240 VAC |
| Input Signal | 4-20 mA DC (two-wire) |
| Output Signal | Dual isolated 4-20 mA DC or voltage |
| Isolation | Input, output, and power supply |
The VJA1-027-AAA0 employs sophisticated signal distribution architecture to maintain accuracy across multi-drop instrumentation loops. The device features multi-point galvanic isolation, which is critical for preventing ground loops in process control environments. By providing two isolated outputs, it enables a single field transmitter to supply data simultaneously to a primary DCS controller and a secondary monitoring or recording device without degradation of the 4-20 mA HART loop protocol signal integrity.
Q: Can this distributor be used with self-powered (four-wire) transmitters?
A: The VJA1-027-AAA0 is specifically designed for two-wire transmitters where the module provides the necessary loop excitation power. Using it with four-wire transmitters may require modification of the loop wiring to avoid voltage contention.
Q: Is the output range field-configurable?
A: The module is factory-calibrated based on the model suffix. While it supports both current and voltage outputs, internal adjustments or jumpers may be required depending on the specific output scaling specified at time of manufacture.
