MLC−DR64H/DC HONEYWELL Relay Digital Output Module
| Product Description |
|
The MLC‑DR64H/DC is a digital output relay module made by Honeywell, intended for use in industrial/control‑system / PLC (programmable logic controller) environments.It belongs to the “MLC” series of modular controllers (base + I/O modules) — in particular “DR64H/DC” indicates a 64‑point module with
DC-type base (power & I/O).It provides relay outputs (i.e. electromechanical relay contacts) rather than transistor outputs — which means it can
switch higher voltages / currents and supports isolated/re‑layed contact switching, suitable for driving external loads such
as motors, solenoids, lights, valves, or other AC/DC loads
|
| More Technical Data |
| Module Type |
Relay Digital Output Module (part of MLC series) |
| I/O Configuration (base module context) |
MLC‑DR64H/DC — provides (in base configuration) 32 inputs + 32 relay outputs (for 64‑point total) under “non‑IEC” (legacy) base. |
| Power Supply (base) |
For base modules in MLC/MLC‑DN/DR series (100 ~ 240 V AC for AC base) — though for DC‑base version (DC) presumably DC supply; datasheet notes rated power supply 100 ~ 240 V AC (for AC base), but MLC‑DR64H/DC uses DC base. |
| Environmental / Use Conditions |
The base system design (for MLC/ML series) supports “industrial‑grade” conditions, including electrical noise protection, surge/ESD immunity. |
| Frequently Asked Questions |
|
Q: What kind of loads can the module drive? (AC, DC; resistive, inductive, high current?)
A: The module uses electromechanical relays for outputs, which generally allows switching AC or DC loads, and isolates control logic from load circuits. However, publicly available summary datasheets do not clearly state the maximum current/voltage per relay contact for MLC‑DR64H/DC. So you
cannot safely assume e.g. 10 A at 240 VAC. For safe design, you must refer to the full official datasheet or contact Honeywell / your
supplier to get the contact ratings (max current, AC/DC, resistive/inductive).
Q: Is the module suitable for industrial/harsh environments (noise, surge, ESD)?
A: Yes — the series documentation for MLC‑DR/DN/64H modules indicates insulation resistance, surge and ESD tolerance (e.g.
withstand 1,500 V pulse noise, 4 kV ESD contact discharge), and compliance with relevant
EMC / electromagnetic noise standards.
Q: Can I mix mains voltage loads (e.g. AC 220V) and low-voltage DC loads on the module outputs?
A: Because these are relay outputs (electromechanical, isolated contacts), in principle you can use them to switch either AC
or DC loads. However — and this is critical — you must ensure that each relay output circuit is wired properly, and
avoid mixing mains and low-voltage loads on the same common contact block, and respect the contact ratings.
Since the public summary lacks per‑contact ratings, you must confirm with full
datasheet before wiring high-voltage mains loads.
|
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