Product Overview

The Honeywell MLE-TN32A is a digital open collector output module from the ML50 series.
It provides 32 points of open collector output for controlling external devices.
Rated input voltage accepts either DC12V or DC24V for flexible system integration.
Each channel can switch loads independently with fast response times.
The MLE-TN32A suits PLC expansion, relay driving, and indicator control applications.
Its compact design saves valuable panel space in control cabinets.
Consequently, this module works well for high-density discrete output requirements.

Technical Specifications

Output Characteristics

The Honeywell MLE-TN32A offers 32 output points per module.
Rated input voltage is DC12/24V with flexible configuration.
Load voltage range spans from DC10.2V to DC26.4V .
Maximum load current reaches 0.2A per point for individual channels.
Total current per common (COM) equals 2A maximum .
Off leakage current measures 0.1 mA or less to prevent false triggering.
Maximum voltage drop when on equals DC 0.4A for efficient switching.

Response Times

Off to On response time is 1ms or less for fast activation.
Similarly, On to Off response time is also 1ms or less .
These specifications apply at rated load with resistive load conditions.
Therefore, the MLE-TN32A suits high-speed applications like counting or positioning.
Fast response ensures precise timing in automated processes.

Isolation and Common Method

Isolation resistance measures 10MΩ or more by megger testing.
This high isolation prevents cross-talk between output channels.
Common method uses 32 points per COM for simplified wiring.
All outputs share a single common return path.
Consequently, the Honeywell MLE-TN32A reduces terminal block complexity.

Power Consumption

Internal current consumption equals 120mA from the system power supply.
External power supply voltage requires DC12/24V ± 10% .
Maximum ripple voltage allowed is 4 Vp-p for stable operation.
External current consumption measures 20mA or less at DC24V connection.
Therefore, the MLE-TN32A imposes minimal load on external power supplies.

Physical Characteristics

Weight equals 104g for lightweight mounting.
The module uses standard ML50 series form factor.
Dimensions suit compact DIN rail mounting in control panels.
All connections terminate via removable screw terminal blocks.

Typical Applications

The Honeywell MLE-TN32A controls DC solenoid valves and relays.
It drives LED indicators and small warning lights directly.
The module switches solid state relays (SSRs) for AC load control.
It interfaces with PLCs and industrial controllers for signal conditioning.
Therefore, the MLE-TN32A serves factory automation and packaging machinery.

Installation Guidelines

First, mount the Honeywell MLE-TN32A on standard DIN rail.
Ensure the module clicks securely into the rail locking mechanism.
Connect the external DC power supply (12V or 24V) to the COM terminals.
Wire each output load between the output point and the common return.
For inductive loads, install a flyback diode across the load.
Keep output wiring separated from low-level analog signals.
Use copper cables with 0.5 to 1.5 mm² cross section for all connections.
Do not exceed 0.2A per point or 2A per common on the MLE-TN32A .
Verify the external power supply stays within DC10.2V to DC26.4V.
After wiring, check each output channel with a test program.

Wiring Recommendations

Use twisted pair cables for long output runs to reduce noise.
For LED loads, no additional protection components are required.
For relay loads, install a suppression diode across the relay coil.
Connect the external power supply ground to the system ground.
Keep cable lengths under 30 meters for reliable switching.
Secure wires with cable ties to prevent stress on terminals.
Label each output channel clearly for future maintenance.
Use ferrule terminals on stranded wires for better connections.
The Honeywell MLE-TN32A accepts rigid or stranded wires.

Package Contents

• 1 x Honeywell MLE-TN32A open collector output module

• 1 x 32-position removable terminal block

• 1 x Module labeling strip for channel identification

• 1 x Quick start installation guide

• 1 x DIN rail mounting clip (pre-installed)

Frequently Asked Questions (FAQ)

1. Can the MLE-TN32A switch AC loads directly?

No, the Honeywell MLE-TN32A is a DC open collector output only. Use an external relay or SSR to switch AC loads.

2. What is the maximum total current for all 32 channels?

Total current is limited to 2A per common. The MLE-TN32A has one common for all 32 points.

3. Does this module require an external pull-up resistor?

Yes, open collector outputs need an external pull-up resistor. The Honeywell MLE-TN32A provides only the switching transistor.

4. Can I use 12V and 24V loads on the same module?

Yes, but all outputs share the same COM voltage. The MLE-TN32A requires the same voltage for all connected loads.

5. What happens if I exceed 0.2A on one output channel?

Exceeding 0.2A may damage the output transistor permanently. The Honeywell MLE-TN32A does not have per-channel overcurrent protection.