Brand:Honeywell DCS Item No.:2MLQ-TR8A Product Origin:USA Product Dimensions:114 × 48 × 127 mm Product Weight:0.15 kg Payment:T/T, Western Union, Credit Card Goods_stock:15 Shipping Port:Xiamen, China Lead Time:1-3 Days Condition:Brand New And Original Warranty:1 Year Certificate:COO
High-channel-count digital I/O can make a significant difference in the design of an industrial control cabinet. Instead of distributing a large number of discrete signals across many smaller modules, the Honeywell 2MLQ-TR8A provides 64 transistor output points in a single MasterLogic-200 I/O module.
The module is intended for DC field control and uses a sink-type transistor output configuration. This makes it particularly suitable for automated equipment in which outputs are switched frequently as part of machine sequences, interlocks, actuator operations, or production cycles.
Its solid-state switching architecture eliminates the mechanical contacts found in relay outputs, making transistor technology a natural choice for applications requiring repeated switching. The module also combines photo-coupler isolation, Zener-diode surge absorption, LED indication, and fast response characteristics into a compact industrial I/O solution.
For engineers expanding a MasterLogic-200 system, the 2MLQ-TR8A offers an attractive balance between channel density and control performance. For maintenance teams, its straightforward digital-output architecture and visual status indication can also simplify fault tracing when a field device does not respond as expected.
When properly matched to the external supply and connected loads, the 2MLQ-TR8A is a capable choice for demanding multi-channel DC output applications.
Technical Specifications
Parameter
Specification
Brand
Honeywell
Model
2MLQ-TR8A
Product Type
Transistor Output Module
PLC Platform
MasterLogic-200
Output Type
Digital Transistor Output
Output Configuration
Sink Type
Number of Output Points
64
Isolation Method
Photo Coupler Isolation
Rated Load Voltage
DC 12/24 V
Load Voltage Range
DC 10.2–26.4 V
Maximum Load Current
0.1 A / Point
Maximum Common Current
2 A / COM
Off Leakage Current
0.1 mA or less
Maximum Inrush Current
0.7 A / 10 ms or less
Maximum ON Voltage Drop
DC 0.2 V or less
Surge Absorber
Zener Diode
Response Time, OFF → ON
1 ms or less
Response Time, ON → OFF
1 ms or less
Common Method
16 Points / 1 COM
Current Consumption
230 mA with all points ON
External Power Supply
DC 12/24 V ±10%
External Supply Ripple
4 Vp-p or less
External Supply Current
10 mA or less at DC 24 V connection
Operation Indicator
LED
External Connection
40-pin connector × 2
Proper Cable Size
0.3 mm²
Dimensions
114 × 48 × 127 mm
Weight
0.15 kg (0.33 lb)
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Applications
The 2MLQ-TR8A is a strong fit for automation projects where output density, switching performance, and organized field wiring are important.
Production machinery: Controls solenoid valves, actuators, indicators, and other compatible DC devices.
Packaging systems: Supports repetitive switching for pneumatic mechanisms, actuators, and machine-control functions.
Conveyor and material-handling equipment: Provides digital commands for sorting, positioning, transfer, and movement mechanisms.
Factory automation: Expands the number of available digital outputs without requiring a large number of separate modules.
Machine-building projects: Offers 64 transistor output channels for OEM control cabinets with demanding I/O requirements.
Process-support equipment: Controls compatible valves, alarms, auxiliary relays, and other discrete field devices.
PLC system expansion: Provides additional output capacity for existing MasterLogic-200 installations.
The high channel count makes this module especially attractive when many DC control points need to be managed from one PLC system.
Engineering Benefits of the 2MLQ-TR8A
64 output points in one module The 2MLQ-TR8A provides twice the channel capacity of a 32-point output module, making it a useful solution for systems with extensive discrete control requirements.
Fast solid-state switching The transistor output architecture is designed for rapid switching, with a specified response time of 1 ms or less for both OFF-to-ON and ON-to-OFF operation under the applicable conditions.
Sink-type output architecture The module uses a sinking transistor configuration, providing a defined electrical interface for compatible DC field circuits. Correct polarity and load wiring are essential during installation.
Wide practical DC voltage range The rated load voltage is DC 12/24 V, while the specified load-voltage range is DC 10.2–26.4 V. This accommodates common industrial DC control arrangements.
Photo-coupler isolation Photo-coupler isolation helps electrically separate the output circuitry from the internal control electronics, supporting reliable signal handling in an industrial control cabinet.
Built-in surge absorption A Zener-diode surge absorber is incorporated into the output design, providing protection against applicable transient conditions.
Low ON-state voltage drop The maximum specified ON-state voltage drop is DC 0.2 V or less, helping maintain efficient switching for appropriate loads.
Practical maintenance visibility LED output indication gives maintenance personnel a convenient visual reference when checking output states during commissioning or troubleshooting.
Technical FAQs
1. How many outputs does the Honeywell 2MLQ-TR8A provide? The module provides 64 digital transistor output points, making it a high-density output solution within the MasterLogic-200 I/O family.
2. Is the 2MLQ-TR8A a sink or source output module? The 2MLQ-TR8A is a sink-type transistor output module. Field wiring must follow the appropriate sinking-output configuration.
3. What load voltage is supported? The rated load voltage is DC 12/24 V, with a specified load-voltage range of DC 10.2–26.4 V.
4. What is the maximum current of an individual output? Each output point supports a maximum load current of 0.1 A. The connected device must remain within this limit.
5. What is the maximum common current? The specified maximum load current is 2 A per COM. When several outputs operate simultaneously, the total current through the corresponding common circuit must be considered.
6. What is the output response time? The specified response time is 1 ms or less for OFF-to-ON and 1 ms or less for ON-to-OFF under the applicable rated-load conditions.
7. What happens if a connected load has excessive inrush current? An excessive inrush current can place abnormal stress on the transistor output. The connected load should have an inrush characteristic compatible with the module's specified limit of 0.7 A for 10 ms or less.
8. How should a channel that does not switch be diagnosed? Check the PLC logic first, then observe the corresponding output indication. Continue by checking the external DC supply, common wiring, output polarity, field wiring, and load condition. This sequence helps determine whether the fault originates in the PLC program, module, wiring, or field device.
9. Does the module use electrical isolation between the control and output circuits? Yes. The 2MLQ-TR8A uses photo-coupler isolation, providing electrical separation between the relevant circuits.
10. What connector arrangement is used for field wiring? The module uses two 40-pin connectors for external connections. The specified proper cable size is 0.3 mm².
