Honeywell TC-MDP081 Pulse Input Module 8-Ch

TC-MDP081 8-Channel Pulse Input Module with 2 Outputs

Product Introduction

The TC-MDP081 is a pulse input module built for high-speed counting and frequency measurement. Control engineers use it to read encoders, flow meters, proximity sensors, and other pulse-generating devices. Specifically, it provides 8 floating, optically isolated input channels with a 0-100 kHz frequency range.

Channels 0 through 5 measure frequency and pulse length. Pulse length measurement is selectable between high, low, or period. Channels 6 and 7 add accumulated value and target value functions. Moreover, those last two channels drive 2 optically isolated outputs rated at 500 mA. Each output switches when its input reaches the user-set target value.

Technical Specifications

The module accepts 0-30 VDC input with two selectable ranges. The high range counts transitions at approximately 8.80V, while the low range triggers at about 3.25V. Input hysteresis is 1.1V typical (12.5%) in high range and 0.90V typical (27%) in low range. Maximum input current reaches 12.5 mA; typical draw is 2 mA in low range and 6 mA in high range.

Each channel senses either the leading or trailing edge of a pulse. Therefore, you configure on-to-off transitions per channel to match the sensor output. Counters are 32-bit, which supports large accumulated values without rollover issues in most applications.

Power dissipation peaks at 7.0W. Isolation is rated 1500V DC from terminal block to backplane and 1500V DC channel-to-channel. The module connects through the TC-TBCH 36-position terminal block.

Output Channel Behavior

The first six channels (0-5) have no outputs. Only channels 6 and 7 control the two onboard outputs. You set a target value, and the output transitions from OFF to ON when the input reaches that target. This design suits batch counting, dosing, and position-triggered switching. Because outputs are optically isolated and rated 500 mA, they can drive small relays or pilot devices directly.

Mechanical and Environmental Parameters

The TC-MDP081 installs in a standard I/O slot and uses the TC-TBCH terminal block for field wiring. It dissipates up to 7.0W, so cabinet ventilation should account for this heat load. Isolation ratings of 1500V DC protect the backplane from field transients. Observe host chassis environmental limits during operation.

Installation Guide

First, insert the TC-MDP081 into an available slot and secure it. Next, attach the TC-TBCH terminal block and wire each input to its pulse source. Then select the high or low input range to match your signal amplitude. Configure edge detection for each channel based on the sensor's leading or trailing edge.

For channels 6 and 7, set the target values that trigger the outputs. Additionally, confirm output loads stay within 500 mA. Finally, verify input current draw and check that total power dissipation stays within the 7.0W limit.

Packaging List

• 1 × TC-MDP081 pulse input module

• 1 × Installation instruction sheet

• 1 × Anti-static protective bag

• 1 × Anti-vibration packing insert

Shipping is available via Fedex, UPS, and DHL. Orders typically ship within 3–5 business days after payment confirmation.

FAQ

Q1: How many inputs and outputs does the TC-MDP081 have?
A: It has 8 pulse inputs and 2 outputs. Only channels 6 and 7 control the outputs.

Q2: What is the maximum input frequency?
A: The frequency range is 0-100 kHz, which suits encoders and high-speed flow meters.

Q3: What input voltage ranges are selectable?
A: You can choose 0-30 VDC with a high range triggering near 8.80V or a low range near 3.25V.

Q4: How do the outputs work?
A: You set a target value on channel 6 or 7. The output then switches from OFF to ON when the input reaches that target.

Q5: What is the isolation rating?
A: Isolation is 1500V DC from terminal block to backplane and 1500V DC channel-to-channel.