ADV169-P50

The Yokogawa ADV169-P50 is a 64-channel digital input module designed for ST6-compatible I/O configurations in Yokogawa control systems. It receives discrete field signals and transfers their ON/OFF status to the control system. Its input architecture provides signal isolation with a common negative connection for each group of 16 channels, allowing multiple field input circuits to be organized within one module.

Input Channels and Signal Processing

The module provides 64 digital input channels for contact and voltage status signals. It supports two input detection methods:

• Contact input: OFF signal at 100 kOhm or higher; ON signal at 200 Ohm or lower.
• Voltage input: OFF signal from 4.5 to 25 V DC; ON signal at +/-1 V DC with a source resistance of 200 Ohm or lower.

The contact input rating is 5 V DC and 20 mA or higher. These thresholds define the electrical conditions used to distinguish field contact states and voltage signals.

Channel Isolation and Input Timing

The ADV169 uses a common negative (-) connection for every 16 channels. This divides the 64 inputs into four groups of 16, rather than providing an independent common connection for every channel. The distinction is important when planning field wiring and checking the polarity of connected voltage signals.

The specified input response time is 8 ms for status input. The module does not support the pushbutton input function listed for certain other Yokogawa digital input modules.

Connection and Physical Specifications

The module uses the dedicated KS9 cable connection for its field interface. The cable and terminal arrangement should be checked against the existing ST6-compatible installation before replacement.

Its specified maximum current consumption is 800 mA at 5 V DC, and its approximate weight is 0.30 kg. The physical dimensions shown in Yokogawa's general specifications are approximately 130 x 127.2 x 32.8 mm.

Technical Specifications

Parameter	Specification
Model	ADV169-P50
Brand	Yokogawa
Product Type	Digital Input Module
Compatible Type	ST6
Number of Input Channels	64
Input Signal	Contact input, voltage input
Contact Input OFF Signal	100 kOhm or higher
Contact Input ON Signal	200 Ohm or lower
Voltage Input OFF Signal	4.5 to 25 V DC
Voltage Input ON Signal	+/-1 V DC, 200 Ohm or lower
Input Contact Rating	5 V DC, 20 mA or higher
Input Response Time	8 ms (status input)
Pushbutton Input Function	Not supported
Signal Isolation	Common negative (-) side every 16 channels
Maximum Current Consumption	800 mA at 5 V DC
External Connection	Dedicated KS9 cable
Dimensions	130 x 127.2 x 32.8 mm
Weight	0.30 kg

Frequently Asked Questions

Q: How many field signals can the ADV169-P50 monitor?

A: It provides 64 digital input channels. Each channel detects the ON/OFF state of a contact or voltage input according to the specified electrical thresholds.

Q: Does the ADV169-P50 provide individual isolation for all 64 channels?

A: No. Its isolation arrangement uses a common negative connection for every 16 channels. The four channel groups should be considered when checking field wiring and grounding arrangements.

Q: Can the ADV169-P50 be used as a pushbutton input module?

A: The ADV169 is specified for status input and does not support the pushbutton input function. Its 8 ms response time applies to status input operation.

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