Honeywell TC-POA081 8-Point Analog Output Module

Honeywell TC-POA081 8-Channel Analog Output Module

Product Introduction

The Honeywell TC-POA081 provides eight dual-ended output channels. Each channel references a common sense resistor. You can use this module for safe area or intrinsically safe applications. It meets CENELEC II (1) 2G EEx ia/ib IIB/IIC T4 standards. Therefore, it works well in explosive gas environments.

The output range covers 4 to 20mA signal with an extended range of 2 to 22mA. Voltage output stays above 11V at 22mA into a 500 ohm load. Accuracy reaches 0.1% of signal range. Additionally, temperature drift is only 100 ppm/°C. The 13-bit resolution ensures fine control. Response time is fast at 4ms to 99% of final value.

Key Technical Specifications

Output Capacity: Eight channels, dual-ended, single common reference.
Load Range: 0 to 500 ohms.
Output Signal: 4-20mA standard, extended 2-22mA.
Accuracy: 0.1% of signal range.
Resolution: 13 bits.
Response Time: 4ms to 99% of final value.
Temperature Drift: 100 ppm/°C.

For field circuit values, the TC-POA081 permits Uo = 21V, Io = 93mA, and Po = 520mW. Inductance limits are 10mH for IIB and 3mH for IIC. Capacitance limits are 1.27µF for IIB and 188nF for IIC. These values keep the output intrinsically safe.

Power comes through the terminal base. Consumption is 0.77 power supply unit load. Power dissipation is 5.4W. Lead breakage detection triggers alarm via backplane bus. The channel LED flashes red for faults. You can configure breakage detection for channel groups 0-1, 2-3, 4-5, and 6-7. Latch mode is configurable for groups 0-3 and 4-7.

Galvanic Isolation and Wiring

Galvanic isolation exists between output and backplane bus. Isolation also separates output from power supply per DIN EN 50020. However, there is no isolation between outputs relative to each other. Therefore, careful wiring is necessary.

Terminal assignments for two-wire output are as follows:

• Ch0: 0,1

• Ch1: 4,5

• Ch2: 8,9

• Ch3: 12,13

• Ch4: 17,18

• Ch5: 21,22

• Ch6: 25,26

• Ch7: 29,30

Use shielded multicore cable with a shield for each channel. This ensures EMC compliance according to DIN EN 50081-2 and DIN EN 50082-2. Each channel’s isolation must exceed 500V.

Mechanical and Environmental Conditions

Ambient Temperature: –20°C to 70°C.
Storage Temperature: –20°C to 100°C.
Humidity: 95% non-condensing.
Pollution Gas Test: Level G3 per ISA-S71.04-1985.
Shock: 15g peak for 11ms duration.
Vibration: 2g from 10Hz to 500Hz per IEC 68-2-6.
Protection Class: IP20. For field installation, a separate housing with IP54 or better is required.

Furthermore, the TC-POA081 weighs 0.274 kg. Dimensions are 76 x 94 x 46 mm (3.0 x 3.7 x 1.8 inches). Keyswitch position is 4. These compact dimensions save panel space.

Installation Guidelines

First, mount the module on a compatible terminal base. The base supplies intrinsically safe power. Next, set the keyswitch to position 4. Then connect field wiring according to terminal assignments. Use shielded cables for each channel.

Additionally, configure lead breakage detection through the system software. You can enable or disable it for channel pairs. Latch mode is also configurable for larger channel groups. Finally, verify load resistance stays between 0 and 500 ohms. Do not exceed field circuit values for Uo, Io, or Po.

For safe area use, no extra housing is needed. For field installations, always use an IP54 enclosure. Follow DIN EN 50014 and DIN EN 50020 standards during installation.

Packaging List

• Honeywell TC-POA081 analog output module (1 unit)

• Terminal assignment label (1 piece)

• Installation guide (1 copy)

• Dust cover (1 piece)

Shipping Information

We ship worldwide using FedEx, UPS, or DHL. All items are carefully packed in anti-static materials. Tracking number provided within 24 hours.

Frequently Asked Questions (FAQ)

1. What is the output accuracy of the TC-POA081?
The Honeywell TC-POA081 offers 0.1% accuracy of signal range. Temperature drift is 100 ppm/°C.

2. Can I use this module in a hazardous area?
Yes. The TC-POA081 is CENELEC certified II (1) 2G EEx ia/ib IIB/IIC T4. It is intrinsically safe for gas zones.

3. How do I configure lead breakage detection?
You configure it for channel groups 0-1, 2-3, 4-5, and 6-7 via the backplane bus. The LED flashes red on fault.

4. What is the maximum load resistance for this output module?
Maximum load is 500 ohms. Minimum load is 0 ohms. Voltage stays above 11V at 22mA.

5. Does the TC-POA081 provide isolation between channels?
No. There is no galvanic isolation between output channels. Isolation exists only between output and backplane bus, and output and power supply.