Honeywell MLE-TN32A: 32-Channel Open Collector Output Module
This is a Honeywell MLE-TN32A digital output card. It offers thirty-two open collector output channels. The module belongs to the trusted ML 50 series. It is built for industrial automation panels. Control devices like indicator lights, small relays, and valves. It connects directly to your PLC or controller system.
Model Number Structure Explained
- MLE – Product Family: ML Series Expansion Module
- TN – Circuit Type: Transistor, NPN (Open Collector) Output
- 32 – I/O Capacity: 32 Individual Output Channels
- A – Design Revision: First Standard Version
- 32 – I/O Capacity: 32 Individual Output Channels
- TN – Circuit Type: Transistor, NPN (Open Collector) Output
Complete Technical Data Sheet
- Brand & Model: Honeywell MLE-TN32A
- Series Line: ML 50 Series I/O Module
- Function: Digital Sinking (Open Collector) Output
- Number of Outputs: 32 Points (Channels)
- Load Supply Voltage: DC 12V or 24V (Nominal)
- Operating Voltage Range: DC 10.2V to 26.4V
- Max Current per Point: 0.2 Amperes
- Max Current per Common (COM): 2.0 Amperes
- Leakage Current (OFF): Less than 0.1 mA
- Voltage Drop (ON): 0.4V DC maximum
- Switching Response Time: ≤ 1 ms (Turn ON and Turn OFF)
- Isolation Resistance: ≥ 10 MΩ (at 500 VDC)
- Internal Power Use: 120 mA (from system supply)
- External Supply for Loads: DC 12/24V ±10%, Ripple under 4 Vp-p
- External Supply Current: ≤ 20 mA (at 24V)
- Operating Temperature: 0°C to +55°C (+32°F to +131°F)
- Storage Temperature: -25°C to +75°C (-13°F to +167°F)
- Ambient Humidity: 10% to 90% (non-condensing)
- Vibration Resistance: 10-55 Hz, 0.5 mm amplitude
- Shock Resistance: 100 m/s² (approx. 10G) for 11 ms
- Pollution Degree: 2 (as per IEC 60664)
- Mounting Style: Standard 35 mm DIN Rail
- Connection Type: Removable screw terminal block
- Module Weight: 104 grams (approx. 3.7 oz)
Global Delivery & Warranty Promise
- Fast International Shipping: We use FedEx, UPS, and DHL for reliable, tracked delivery.
- Confidence in Quality: Your purchase includes a solid 12-month warranty.
- We provide full tracking details as soon as your order ships.
Professional FAQs
Q: Is this a sourcing (PNP) or sinking (NPN) output module?
A: The MLE-TN32A is a sinking output module (NPN / open collector type). The outputs connect the load to common ground (COM) when active.
Q: What is the maximum total power dissipation for this module?
A: You can calculate it. With 32 points at 0.2A and a max 0.4V drop, the worst-case power is about 2.56 Watts. Ensure your enclosure cooling is adequate.
Q: Can I use it to directly drive a 24V DC solenoid valve?
A: Check the solenoid’s inrush and holding current. If both are under 0.2A, yes. For higher currents, you must use an intermediate relay or contactor.
Q: From an electrical noise perspective, what are best wiring practices?
A: Keep the load wiring separate from sensitive signal cables. Use twisted pairs for long runs. Always connect a suppression diode across inductive loads (like relay coils) close to the load.
Q: How does this module connect to a Honeywell PLC?
A: It connects via the ML 50 series backplane or expansion bus. You will need the appropriate mounting base and communication adapter for your specific PLC model (like a HC900).
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