Honeywell 621-2175R Digital Output Module
$209.00
$450.00
Description
Product Description
The Honeywell 621‑2175R is a high‑reliability digital output (DO) module engineered for Honeywell 620/621 Series, TDC 2000, and TDC 3000 distributed control systems. Designed for robust industrial environments, this module delivers precise control of discrete field devices including relays, solenoids, contactors, alarms, and interlocks.
Built to withstand harsh conditions, the 621‑2175R provides electrically isolated outputs with strong immunity to noise and interference. Its durable construction and long service life ensure consistent operation in power generation, refining, petrochemical, and manufacturing applications.
Technical Specifications
| Feature | Specification |
|---|---|
| Manufacturer | Honeywell |
| Part Number | 621‑2175R |
| Module Type | Digital Output (DO) |
| Compatible Systems | Honeywell 620/621 Series, TDC 2000, TDC 3000 |
| Output Type | Discrete relay or transistor outputs (depending on configuration) |
| Typical Output Voltage | 24 VDC |
| Number of Output Channels | 8–16 channels (variant dependent) |
| Isolation | Channel‑to‑channel and channel‑to‑logic for noise immunity |
| Output Protection | Overload and short‑circuit protection |
| Diagnostics | Individual status LEDs and module health monitoring |
| Mounting | Rack-mounted for Honeywell 620/621 backplane |
| Operating Temperature | 0°C to 60°C |
| Dimensions | Standard 620‑series form factor |
| Weight | 1.17 lbs |
| Input Power | 80–140 VAC |
Key Features
-
Reliable switching of multiple discrete field devices
-
Strong electrical isolation for industrial noise environments
-
Rugged construction for extended service life
-
Visual status indicators for easy troubleshooting
-
Seamless integration with legacy Honeywell DCS
Applications
The 621‑2175R is suitable for discrete device control, sequencing, alarms, interlocks, and safety-related process control in DCS environments. Typical industries include:
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Power generation plants
-
Petrochemical and refining facilities
-
Manufacturing and process automation
FAQ
Q: Can this module be used in TDC 3000 systems?
A: Yes, the 621‑2175R is fully compatible with TDC 3000, as well as 620/621 Series and TDC 2000 systems.
Q: How many output channels does this module support?
A: Depending on the variant, the module provides 8 to 16 discrete output channels.
Q: Does it include overload protection?
A: Yes, the module has built-in overload and short-circuit protection for each channel.
Similar Models: Honeywell 621‑2150R (digital output for legacy DCS), 621‑1180R (analog output module).
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