Description

Yokogawa AMM52T Current Output Multiplexer Module

Configured for multiplexed 4-20 mA signal transmission in Yokogawa CENTUM RIO networks, the Yokogawa AMM52T-S2 (AMM52T Current Output Multiplexer Module) provides direct electrical execution for sequential analog current output control to field actuators and valve positioners.

SuffixBreakdown&ModelMatrix

Model	Description
AMM52T	Standard Current Output Multiplexer Module
AMM52T-S2	Conformal-coated or corrosion-resistant hardware variant

HardwareSpecifications

Parameter	Specification
ModelBrand	Yokogawa AMM52T / AMM52T-S2
Origin	Japan
Weight	Approx. 0.6 kg
Dimensions	Approx. 282 x 210 x 20 mm
OperatingTemp	Standard industrial cabinet environment
PowerConsumption	<= 4 A @ 5 VDC backplane supply
ModuleType	Current Output Multiplexer Module
OutputChannels	16 multiplexed output channels
OutputSignalRange	DC 4-20 mA
MaximumOutputCurrent	20 mA per channel
OutputAccuracy	+/-48 uA (approx. +/-0.3% FS)
TemperatureInfluence	+/-32 uA per 10 degC
DataRefreshCycle	1 second
SignalIsolation	No isolation between channels or field/system side
InstallationMethod	Dedicated RIO nest mounting
FieldConnection	M4 screw terminal connection

4-20mALoopTransmissionCharacteristics

The AMM52T operates as a time-division multiplexed analog output module for 4-20 mA loop transmission in CENTUM-XL, CENTUM CS 1000, and CENTUM CS 3000 architectures. The module does not implement channel-to-channel isolation or galvanic separation between field wiring and the system backplane. External isolators or signal conditioners may be required where field grounding potential differs from cabinet ground reference.

FrequentlyAskedQuestions

Q: Does the AMM52T support online hot-swap replacement?
A: No. The module should be removed only after backplane power is isolated to prevent multiplex bus interruption and output instability.

Q: Can the module directly drive field valve positioners?
A: Yes. The module outputs standard DC 4-20 mA control signals intended for compatible two-wire field actuators and positioners within allowable loop load conditions.

Q: Is electrical isolation integrated into the module hardware?
A: No. The AMM52T is a non-isolated design. External isolation barriers are recommended for installations with multiple grounding references or high electromagnetic noise exposure.

FieldInstallationGuidelines

• Route analog output wiring separately from motor feeders, inverter output cables, and relay switching circuits.
• Connect cable shields to a single-point cabinet ground to reduce common-mode interference.
• Verify loop impedance before energizing field output channels to prevent current saturation conditions.
• Tighten M4 terminal screws according to cabinet wiring standards to avoid intermittent loop continuity.
• Do not share analog signal commons with high-current protective earth conductors.

Specifications

• Brand: Yokogawa

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems