Product Details
The ABB IM/C1900INS (part number 01A75661R000), also cataloged as the IM/C1900INS Circular Chart Recorder, operates as a dedicated hardware component for universal analog signal acquisition and physical chart trace generation within ABB Commander 1900 system platforms. The unit processes field inputs and drives pen displacement and circular paper rotation on a 190 mm (7.5 in) format.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IM/C1900INS (Part Number: 01A75661R000) |
| Brand | ABB |
| Origin | United Kingdom |
| Weight | 4.5 kg |
| Dimensions | 420 mm x 297 mm x 160 mm (W x H x D) |
| Operating Temp | -10 to +55 deg C |
| Power Consumption | 24 VDC or 100-240 VAC supply options |
| Chart Diameter | 190 mm (7.5 in) compact circular chart |
| Recording Accuracy | +/-0.1% of span |
| Chart Speed | Programmable (1 hour to 32 days per revolution) |
| Input Signal Types | Thermocouples, RTDs, VDC, 4-20 mA, Digital inputs |
| Serial Interface | RS485 Modbus RTU protocol |
| Enclosure Protection | NEMA 4X / IP66 front panel washdown rating |
| Product Type | Circular Chart Recorders |
Channel Isolation and Input Signal Conditioning
The IM/C1900INS utilizes high-resolution analog input conditioning circuits to isolate universal field inputs prior to digital processing. Channel isolation eliminates ground potential differences across RTD, thermocouple, and 4-20 mA transmitter loops. The onboard microprocessor executes linearization algorithms to convert field measurements into servo pen movements and transmits digitized values across the RS485 Modbus serial bus.
Frequently Asked Questions
Q: Does the IM/C1900INS support hot-swapping or field maintenance while powered?
A: No. Terminal connections and internal board access require complete isolation of the 100-240 VAC or 24 VDC main supply to prevent electrical shock or equipment damage.
Q: How is the RS485 Modbus network bus terminated at the recorder?
A: A 120 ohm line termination resistor must be connected across the differential A/B communication terminals on the final physical device along the RS485 daisy-chain trunk.
Field Installation Guidelines
- Mount the unit in a panel cutout matching the 420 mm x 297 mm chassis enclosure dimensions.
- Ensure the front door seal compresses uniformly against the cabinet face to preserve the NEMA 4X / IP66 washdown protection rating.
- Route signal inputs and RS485 serial communication cables in grounded metallic conduits separate from high-voltage AC power lines.
- Connect a dedicated protective earth (PE) grounding cable to the main chassis terminal bolt prior to energizing the instrument.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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