AMM52T YOKOGAWA Current Output Multiplexer

YOKOGAWA APM11-S3 CENTUM CS/VP Pulse Input Module

YOKOGAWA APM11-S3 CENTUM CS/VP Pulse Input Module

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YOKOGAWA APM11-S3 Pulse Input Module The YOKOGAWA APM11-S3, also cataloged as the APM11 Pulse Input Module, operates as a dedicated...

رمز المنتج: APM11

Manufacturer: Yokogawa
Product No.: APM11
Product Type: Pulse Input Modules
Product Origin: Japan
Payment:T/T, Western Union
Weight: 600g
Shipping port: Xiamen
Warranty: 12 months

وصف التقييمات

YOKOGAWA APM11-S3 Pulse Input Module

The YOKOGAWA APM11-S3, also cataloged as the APM11 Pulse Input Module, operates as a dedicated hardware component for high-speed pulse acquisition and frequency-to-digital conversion within CENTUM CS and VP distributed control system platforms.

Hardware Specifications

Parameter	Specification
Model	APM11-S3
Brand	YOKOGAWA
Origin	Japan
Weight	0.6 kg
Dimensions	100 mm x 250 mm x 120 mm (approx. module size)
Operating Temp	0 deg C to 50 deg C
Power Consumption	400 mA @ 5 VDC
Input Frequency	0 to 10 kHz
Data Update Period	100 ms
Signal Insulation	1500 VAC / min

Signal Conditioning and Transducer Interface

The APM11 serves as the primary interface for field-level pulse transducers, including flowmeters and rotary counters. The module features selectable input impedance and pull-up resistor settings (68 kOhm) to accommodate diverse signal sources, including voltage pulses (+3 to +24 VDC) and dry contact closures. Integrated power supply circuitry provides selectable 12 VDC or 24 VDC excitation for 3-wire sensors, with current limiting set at 40 mA to protect internal components against field-side short circuits.

Frequently Asked Questions

Q: Does the APM11 support hot-swapping in an active I/O nest?

A: Yes. The module is designed for replacement during system operation. However, the user must ensure that the field wiring is appropriately isolated or the associated loop is set to manual/test mode within the control software to prevent process disturbances during the transient state of module extraction.

Q: How is the shunt resistance configured for current pulse inputs?

A: Shunt resistance is selectable via the module hardware interface (200, 510, or 1000 Ohm) or OFF for voltage-only applications. Correct selection is necessary to match the output impedance of the field flowmeter to ensure the signal voltage remains within the operational threshold of -1 to +8 VDC (Low) and +3 to +24 VDC (High).

Field Installation Guidelines

Wiring: Utilize shielded twisted-pair cabling for all pulse inputs. To prevent signal aliasing or electromagnetic interference (EMI), terminate the cable shield at the designated ground terminal provided on the I/O nest backplane.
Excitation Power: When utilizing the internal 12 VDC or 24 VDC transmitter supply, verify that the total current draw of all connected field sensors does not exceed the per-channel or per-module output current limits.
Termination: Ensure that M4 terminal screws are tightened to the manufacturer-specified torque value. Loose connections on high-frequency pulse inputs can manifest as erratic count values or "double-counting" due to contact bounce or induced noise.

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