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ABB NCHM-21 61318607C Digital Input Module
Item NO.:
NCHM-21 61318607CPayment:
T/TPrice:
$2000Product Origin:
swedenColor:
SEWProduct weight:
0.94KGLead Time:
In stockWe will arrange delivery within 3-5 days after receiving the payment.
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The ABB NCHM-21 61318607C Digital Input Module is an essential component in ABB’s control system architecture, designed for acquiring digital (binary) input signals from field devices such as switches, pushbuttons, and relay contacts.
It converts these external signals into logical data for control, monitoring, and alarm processing.
With fast response, strong noise immunity, and high reliability, the NCHM-21 is ideal for demanding industrial automation and process control applications.
| Parameter | Specification |
|---|---|
| Model | NCHM-21 |
| Part Number | 61318607C |
| Type | Digital Input Module |
| System Compatibility | ABB Network 90 / INFI 90 |
| Function | Acquisition and processing of digital input signals |
| Input Channels | 16 optically isolated inputs |
| Input Voltage | 24 V DC (typical) |
| Input Type | Dry contact / active input configurable |
| Input Current | Approx. 5 mA per channel |
| Isolation | Optical isolation between channels and system bus |
| Communication Interface | System bus (RS-485 or dedicated control bus) |
| Communication Speed | Up to 1 Mbps |
| Power Supply | 24 V DC (±10%) |
| Power Consumption | ≤ 5 W |
| Response Time | ≤ 5 ms |
| LED Indicators | One per input channel |
| Mounting | Plug-in modular structure, rack-mounted |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -25°C to +70°C |
| Humidity | 5%–95%, non-condensing |
| Protection Rating | IP20 (for cabinet installation) |
| Dimensions | Approx. 180 × 100 × 25 mm |
| Weight | Approx. 0.25 kg |
Fast signal processing – Response time less than 5 ms ensures real-time control.
Optical isolation – Prevents electrical interference and enhances system safety.
High EMC resistance – Reliable operation in harsh industrial environments.
LED indication – Visual monitoring of each channel’s input status.
Modular and serviceable design – Easy to install, replace, and maintain.
Full system compatibility – Seamless integration with ABB Network 90 and INFI 90 systems.
Process automation and DCS systems
Power and energy management systems
Water and environmental control systems
Petrochemical and metallurgical industries
Machinery and manufacturing automation
Building and infrastructure automation
Mounting location – Install inside a clean, dry, and vibration-free cabinet.
Power supply – Use a stable 24 V DC power source with proper polarity.
ESD protection – Wear an anti-static wrist strap during handling.
Signal wiring – Keep input signal cables separated from high-voltage lines; use shielded twisted pairs.
Grounding – Ensure proper grounding to reduce noise and improve reliability.
Periodic maintenance – Check terminal tightness and LED indications regularly.
The structure and details of the product：
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