ADV551-P10

The Yokogawa ADV551-P10 is a 32-channel digital output module designed for 24 V DC discrete signal control in Yokogawa distributed control systems. It provides current-sink transistor outputs for switching external field devices. Its output functions include ON/OFF status control, one-shot pulse-width output, and time-proportioning ON/OFF control, supporting both conventional discrete commands and timed output operations.

Functional Description

The ADV551 provides 32 digital output channels with a rated applied voltage of 24 V DC. Its current-sink output format allows the module to control compatible DC loads through discrete ON/OFF signals.

The module supports three output functions:

• Status output: Provides standard ON/OFF control signals for external devices.
• Pulse-width output: Generates one-shot output pulses with configurable pulse durations.
• Time-proportioning output: Controls ON/OFF intervals according to a time-proportioning setting.

These functions allow the same module type to handle conventional switching commands and applications requiring timed output signals.

Electrical Characteristics

The external supply voltage range is 20.4 to 26.4 V DC. The maximum load current is 100 mA per channel at 26.4 V. When selecting field loads, the current requirement of each connected device must remain within this limit.

The maximum ON-state output voltage is 2 V DC, while the maximum leakage current in the OFF state is 0.1 mA. These values are relevant when checking load compatibility, particularly for devices with low input-current requirements.

Pulse Output Timing

For pulse-width output, the supported pulse duration ranges from 8 ms to 7200 s. The pulse-width resolution is 8 ms, with an additional ON/OFF delay of up to 1 ms.

The output response time depends on the operating function:

• Status output: 3 ms maximum.
• Mixed status and pulse outputs: 10 ms maximum.

These timing characteristics should be considered when coordinating output commands with external equipment that requires defined switching intervals.

Isolation and Output Protection

The module provides electrical withstand capability between the output signals and the system side, rated at 2 kV AC for 1 minute. The withstand voltage between commons is 500 V AC for 1 minute, with the negative common shared across every 16 channels.

When driving a DC relay, a diode must be connected as specified in the manufacturer's technical documentation.

Technical Specifications

Parameter	Specification
Model	ADV551-P10
Brand	Yokogawa
Product Type	Digital Output Module
Number of Output Channels	32
Rated Applied Voltage	24 V DC
External Power Supply Rating	24 V DC, 50 mA
External Power Supply Voltage Range	20.4 to 26.4 V DC
Output Format	Current sink
Maximum Load Current	100 mA/channel at 26.4 V
Maximum Output ON Voltage	2 V DC
Maximum OFF-State Leakage Current	0.1 mA
Output Response Time	3 ms maximum for status output; 10 ms maximum for mixed status and pulse outputs
Pulse Width	8 ms to 7200 s
Pulse Width Resolution	8 ms
Withstanding Voltage	2 kV AC, output signal to system; 500 V AC between commons, 1 minute
Maximum Current Consumption	700 mA at 5 V DC; 60 mA external supply
External Connection	Pressure clamp terminal, dedicated cable AKB331, or MIL connector cable
Weight	0.20 kg

Frequently Asked Questions

Q: How many field devices can the ADV551-P10 control?

A: The module provides 32 output channels. Each channel supports a maximum load current of 100 mA at 26.4 V. The actual number of connected devices depends on the channel allocation and electrical requirements of each load.

Q: Can the ADV551-P10 generate timed output signals?

A: Yes. It supports one-shot pulse-width output from 8 ms to 7200 s, as well as time-proportioning ON/OFF output. The pulse-width resolution is 8 ms, with an additional ON/OFF delay of up to 1 ms.

Q: What connection options are available for the ADV551-P10?

A: The documented external connection options include pressure clamp terminals, the dedicated AKB331 cable, and MIL connector cables. The appropriate connection arrangement should be verified against the installed terminal or interface hardware.

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