A2SDV105-S000 Yokogawa Digital Input Module

Yokogawa AAP149-S00 CENTUM VP DCS 16 Channel Analog Input Module

Yokogawa AAP149-S00 CENTUM VP DCS 16 Channel Analog Input Module

Availability: 20 left in stock

Yokogawa AAP149-S00 CENTUM VP Analog Input Module The Yokogawa AAP149-S00, also cataloged as the AAP149 Analog Input Module, operates as...

SKU: AAP149-S00

Manufacturer: Yokogawa
Product No.: AAP149-S00
Product Type: Analog Input Modules
Product Origin: JAPAN
Payment:T/T, Western Union
Weight: 350g
Shipping port: Xiamen
Warranty: 12 months

Description Reviews

Yokogawa AAP149-S00 CENTUM VP Analog Input Module

The Yokogawa AAP149-S00, also cataloged as the AAP149 Analog Input Module, operates as a dedicated hardware component for multi-channel analog signal acquisition within Yokogawa CENTUM CS3000 and CENTUM VP DCS platforms. It converts incoming current (4-20 mA) and voltage (0-10 V) field inputs into digitized process values via an integrated 12-bit analog-to-digital converter. The unit interfaces directly with Field Control Station (FCS) backplanes, providing active loop power and optical noise suppression between process wiring and system logic.

Hardware Specifications

Parameter	Specification
Model	AAP149-S00
Brand	Yokogawa
Origin	Japan
Weight	0.35 kg
Dimensions	130 x 100 x 30 mm
Operating Temp	0 to +55 deg C
Power Consumption	230 mA at 5 VDC, 540 mA at 24 VDC
Module Type	Analog Input Module
Input Channels	16 isolated channels
Signal Types	4-20 mA DC current, 0-10 VDC voltage
Accuracy	+/-0.1% of reading (+/-16 uA)
ADC Resolution	12-bit
Isolation Voltage	1500 VDC (input to system)
Data Update Period	10 ms
Storage Temp	-20 to +70 deg C

Channel Isolation and Loop Signal Integrity

The hardware architecture uses high-voltage galvanic optical isolation rated at 1500 VDC to decouple external transmitter loops from the internal DCS backplane bus. This galvanic barrier eliminates ground loop potential differences and suppresses high-frequency transient interference across all 16 channels. Diagnostic circuits constantly monitor individual loop current levels to detect open-circuit wire breaks, over-range conditions exceeding 24 mA, and internal ADC sampling errors, immediately driving system-level status flags upon detection.

Frequently Asked Questions

Q: How is transmitter wiring configured for 2-wire versus 4-wire field devices?

A: Each channel utilizes hardware setting pins located on the module circuit board to toggle between 2-wire powered loop configurations and 4-wire externally powered current inputs.

Q: Can the module be inserted or removed while the Field Control Station is powered?

A: Yes, the module supports hot-swapping within compatible Yokogawa I/O nests, provided that the field terminal block is detached prior to disengaging the backplane connector.

Q: What power output does the module supply to field transmitters?

A: The internal loop power supply provides between 19.0 VDC and 25.5 VDC at 20 mA with a hardware-enforced output current limit of 25 mA per channel.

Field Installation Guidelines

Mount the module securely into the designated slot of the I/O nest or Field Control Station chassis until the upper and lower retaining latches lock fully into position. Before connecting field wiring, verify that channel selector pins are configured correctly for either 2-wire or 4-wire field loop operation according to the loop drawing.

Route field signal cables separately from high-voltage AC lines and inductive motor leads to minimize electromagnetic coupling. When terminating shielded twisted-pair wiring at the pressure clamp terminal or dedicated KS1 interface cable, drain shields to a single dedicated instrument earth ground point at the cabinet entry bar. Ensure signal wires maintain proper conductor engagement and clamp screw torque to prevent intermittent open-circuit fault reporting.

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