AMM52 Yokogawa Analog Input Module Datasheet & Technical Manual

AMM42T Yokogawa Analog Input Module | New & Original Stock

AMM42T Yokogawa Analog Input Module | New & Original Stock

Availability: 99 left in stock

Yokogawa AMM42T Analog Input Module Configured for high-density current signal acquisition in CENTUM CS 3000 and CENTUM VP networks, the...

SKU: AMM42T

Manufacturer: Yokogawa
Product No.: AMM42T
Product Type: Analog Input Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 400g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa AMM42T Analog Input Module

Configured for high-density current signal acquisition in CENTUM CS 3000 and CENTUM VP networks, the Yokogawa AMM42T (AMM42T Analog Input Module) provides direct physical/electrical execution of 16-channel 4-20 mA loop monitoring.

Hardware Specifications

Parameter	Specification
Model	AMM42T
Brand	Yokogawa
Origin	Japan
Weight	0.4 kg
Dimensions	125 x 130 x 25 mm
Operating Temp	0 deg C to 55 deg C
Power Consumption	0.4 A (5 V DC)
Number of Channels	16 isolated inputs
Input Signal	4-20 mA DC
Accuracy	±0.1% of full scale

Yokogawa DCS Process Control and Signal Isolation

The AMM42T manages 16 independent current input channels, each featuring dedicated channel-to-channel and channel-to-system isolation. This architecture effectively mitigates ground loops and common-mode interference in field instrumentation circuits. As a primary interface for 4-20 mA HART loop protocol signals, the module maintains high signal integrity by employing a 250 Ω shunt resistance per channel, ensuring precise voltage drops for the onboard 12-bit analog-to-digital converters. The module performs continuous input signal monitoring, where diagnostic data is transmitted to the host Field Control Station (FCS) every 10 ms to maintain deterministic process control.

Frequently Asked Questions

Q: Does the AMM42T support active hot-swapping during system operation?

A: Hot-swapping is supported only if the I/O rack is configured for dual-redundant operation. When performing a module exchange in a redundant pair, ensure the secondary module is synchronized and active before removing the primary unit to prevent signal loss.

Q: Can this module interface with non-powered field transmitters?

A: The AMM42T is designed to monitor 4-20 mA current loops. If the field transmitter does not provide internal loop power, external 24 V DC power must be supplied in series with the loop to drive the signal through the 250 Ω shunt resistance.

Field Installation Guidelines

Backplane Insertion: Verify the rack slot configuration matches the required redundancy mode. Insert the module into the designated slot, ensuring the backplane connector pins are seated firmly to prevent high-resistance contact points.
Signal Shielding: Terminate cable shields at the cabinet ground bar using high-conductivity grounding lugs. Avoid grounding at both ends of the cable to prevent circulating ground currents that could degrade the ±0.1% accuracy.
Loop Verification: Use a precision current calibrator to inject 4 mA and 20 mA signals at the field terminal block. Validate the scaling within the CENTUM engineering station to ensure the input register reflects the accurate process value.
Environment: Ensure the cabinet ambient temperature remains between 0 deg C and 55 deg C. In dense rack configurations, provide forced-air ventilation to ensure the module internal components do not exceed safe operating temperatures.

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