Bachmann TCO216-C 16-Channel CAN Temperature I/O Module

Description

Key Technical Specifications

The current Bachmann datasheet confirms the 16 thermocouple channels, 24 digital outputs, 12-bit resolution, 16 ms sampling period, 18–34 VDC supply, and output-current specifications. Earlier Bachmann system documentation additionally identifies the CANopen interface as supporting up to 1 Mbit/s with two 9-pin D-sub connectors.

Product Introduction

The Bachmann TCO216-C is a compact, stand-alone CAN slave module combining 16 thermocouple inputs with 24 digital outputs. Each temperature channel accepts either Type J or Type K thermocouples, with configurable measurement ranges up to 500 °C or 800 °C. Sensor-break detection is included for temperature-input monitoring.

The module communicates through CAN/CANopen and can be installed on EN 50022-compatible backplanes. Its 24 digital outputs provide 24 VDC switching capability, making the TCO216-C suitable for distributed temperature-control applications where temperature acquisition and discrete actuator control are handled through one remote I/O node.

TCO216-C

TCO216-C

Installation & Configuration Guide

Stage 1 — Pre-Installation Preparation (~5 minutes)

1. Apply LOTO procedures and isolate the relevant machine or process.
2. Verify the replacement marking: Bachmann TCO216-C / 00008673-00.
3. Photograph the existing CAN wiring, thermocouple terminals, output wiring, and switch settings.
4. Record the CAN node ID and baud-rate settings.
5. Back up the controller’s CANopen configuration.
6. Prepare an ESD strap, multimeter, wire labels, and appropriate screwdriver.

⚠️ Do not assume that a TCO208-C is electrically equivalent. The TCO208-C has 8 thermocouple inputs and 12 digital outputs, whereas TCO216-C provides 16 and 24 respectively.

Stage 2 — Removing the Existing Module (~5 minutes)

1. Disconnect the 18–34 VDC supply.
2. Confirm that the digital outputs have reached a safe state.
3. Label each thermocouple and digital-output connection.
4. Disconnect the CAN connectors without pulling on the cable.
5. Record the CAN termination arrangement.
6. Release the module from the EN 50022 mounting system.
7. Inspect the connectors and mounting rail for damage.

Keep the removed module until the replacement has passed the functional test.

Stage 3 — Installing the Replacement (~5 minutes)

1. Confirm the TCO216-C model and item number.
2. Install the module securely on the designated EN 50022 mounting arrangement.
3. Reconnect the CAN bus using the original network topology.
4. Restore the recorded CAN node ID and baud-rate settings.
5. Reconnect each thermocouple to its corresponding channel.
6. Verify thermocouple polarity and sensor type.
7. Reconnect the 24 VDC digital-output circuits.
8. Check that the total output load remains within the specified limits.

⚠️ The supports both J and K thermocouples, but the selected sensor type is configurable per input. Incorrect thermocouple selection can produce a plausible-looking but incorrect temperature value.

Stage 4 — Power-On & Testing (~10–15 minutes)

1. Verify supply polarity and measure the DC supply before energizing.
2. Apply 18–34 VDC power.
3. Check the module’s status LEDs.
4. Confirm CAN communication with the controller.
5. Verify the node ID and baud rate.
6. Confirm all 16 temperature channels are recognized.
7. Inject or simulate known temperature values where practical.
8. Check sensor-break detection.
9. Test each digital output with the connected equipment in a safe state.
10. Confirm that the controller receives the expected CANopen process data.

For a replacement in an operating machine, test the temperature channels individually before enabling automatic control. A wiring error on a thermocouple can be harder to detect than a completely missing signal because the controller may still receive a valid-looking temperature value.

Frequently Asked Questions (FAQ)

Q1. What is the Bachmann ?

The is a stand-alone CAN/CANopen temperature I/O module providing 16 thermocouple inputs and 24 digital outputs. It belongs to Bachmann’s TCO2xx-C family of distributed CAN modules.

Q2. What thermocouples does support?

It supports Type J and Type K thermocouples, selectable individually by input. The documented measurement range is configurable to 0–500 °C or 0–800 °C depending on the application and sensor type.

Q3. How many digital outputs does have?

The provides 24 digital outputs. The standard output current is 0.5 A per channel, with a maximum of 1 A per channel. The specified combined output current is maximum 12 A.

Q4. What communication protocol does use?

The module operates as a CAN/CANopen slave. Bachmann documentation identifies CAN transfer rates from 10 kbit/s through 1 Mbit/s, with two 9-pin D-sub CAN connectors. The documented CANopen profiles include CiA DS 301 and DS 401.

Q5. What is the supply voltage for ?

The specified supply range is 18–34 VDC. The module’s digital outputs operate at 24 VDC.

Q6. Can replace a TCO208-C?

Not as a simple channel-for-channel assumption. Both belong to the same TCO2xx-C family and share the same basic CAN temperature-I/O concept, but provides 16 temperature inputs and 24 outputs, while TCO208-C provides 8 inputs and 12 outputs. The application configuration and field wiring must therefore be checked before substitution.

Q7. What is the Bachmann part number?

Bachmann documentation identifies 00008673-00 as the manufacturer item number for . When purchasing a replacement, use both the visible model designation and the manufacturer item number to reduce the risk of receiving a different hardware variant.