Analog I/O 4-20 mA Module
BM-A420-122S
The analog 4-20mA I/O module provides two 24-bit inputs and two 16-bit outputs. The I/O modules offer 2500 V r.m.s. isolation, with a wide operating temperature range and Class I Division 2 hazardous location rating, making them ideal for demanding industrial installations.
Connect them to the wireless I/O radios for point-to-point wire replacement applications, or to the RS485 I/O Extension module to add I/O to a Modbus network.
Used With:
Features and Benefits
- Easy to use: No software configuration needed
- Easy to install: Mounts onto a 35 mm DIN rail without any tools
- Failsafe: User can defines how outputs are failed over when RF or I/O communication is ever lost
- Number of Inputs: 2 (24-bit Resolution)
- Number of Outputs: 2 (16-bit Resolution)
- Isolation Voltage: 2500 V r.m.s.
- Accuracy: < 0.28 % of Full Scale
- FailSafe Modes: Last known value (Default) or Any value on scale
Specifications
Hardware & System
| Specification | Description |
| DIN Rail Mounting Compatibility | 35 mm x 7.5 mm DIN Rail |
| I/O Module Slave ID Selection | 16-Position rotary switch |
| Built-In Mounting Hardware | Spring-loaded clip-on system |
| Wire Gauge | Solid / Stranded (AWG) 28-12 gauge |
| Wire Rating | UL: 300 V RMS, 80 °C and 300 V, 105 °C CSA: 300 V RMS, 105 °C |
| Warranty | 2-Year limited |
²When using more than a 5-Module Combination per Radio, use the Power Budget Calculator to determine maximum I/O Module capacity.
Analog 4-20 mA
| Specification | Description |
| Number of Inputs | 2 (24-bit Resolution) |
| Number of Outputs | 2 (16-bit Resolution) |
| Isolation Voltage | 2500 V r.m.s. |
| Signal Range | 4 to 20 mA |
| Accuracy | < 0.28 % of Full Scale |
| Internal Loop Power | +13.5 VDC |
| FailSafe Modes | Last known value (Default) or Any value on scale³ |
| AI Input Impedance (loop) | 128 Ohm |
| AO Terminal Voltage Range | 10 VDC Min. / 31.5 VDC Max. |
³Requires Advanced User Interface to set a specific value on Analog I/O Module.
Physical
| Specification | Description |
| Power Consumption | Typical: 50 mA / Max: 75 mA @12 VDC |
| Packaging Dimensions (WxHxD) | 4.8 x 5.1 x 2.8 in / 123 x 129 x 72 mm |
| Net Dimensions | 0.7 x 3.9 x 4.5 in / 17.5 x 99 x 114 mm |
| Packaging Weight | Single: 0.5 lbs / 227 g Double: 0.8 lbs / 363 g |
| Net Weight (Single) | 0.3 lbs / 136 g |
Safety & Compliance
| Specification | Description |
| Operational Temperature | -40 °C to 85 °C / -40 °F to 185 °F |
| Storage Temperature | -20 °C to 85 °C / -4 °F to 185 °F |
| Humidity | 0 to 99 %, Non-condensing |
| Degree of Protection / Housing Type | IP20 / Plastic |
| Hazardous Locations Classifications | UL Class I; Division 2 (Zone 2), Pending |
Certifications
| Declaration of Conformity (RoHS/CE) | 108.25 kB | Last Modified 07/24/2018 |