MAC2*B | Yokogawa Multipoint Analog Control Card

Product Overview

The Yokogawa MAC2*B is a multipoint analog control card designed for Yokogawa CENTUM XL, microXL, and CENTUM VP/CS3000 Distributed Control Systems. It provides 8 analog input channels and 8 analog output channels per module, supporting precise process variable control for pressure, flow, temperature, and level applications. The card features enhanced signal processing and is compatible with FIO modules for expanded system integration.

Key Specifications

• Product Family: Yokogawa CENTUM DCS
• Product Type: Multipoint Analog Control Card
• Input Channels: 8 analog inputs
• Output Channels: 8 analog outputs
• Analog Input Range: -10 V to +10 V
• Analog Output Range: 0 mA to 20 mA / 4-20 mA
• Accuracy: ±0.1% to ±0.2% of full scale
• Sampling Rate: 1 to 2 times per second
• Power Supply: 24 V DC ±10%
• Insulation Resistance: 100 MΩ or more at 500 V DC
• Withstand Voltage: 1500 V AC (input to output, 1 min)
• Weight: 3.8 kg
• Operating Temperature: -40°C to +70°C

Features and Benefits

• 16 total analog channels (8 in / 8 out) maximize I/O density per card slot
• Compatible with FIO modules of CENTUM VP and CS3000 systems
• High isolation of 1500 V AC protects system from field-side electrical faults
• Dual-redundant configuration support enhances system reliability
• Wide operating temperature range from -40°C to +70°C for harsh environments
• M4 screw terminals and M3 shield terminals provide robust field wiring connections

Applications

• CENTUM VP/CS3000 analog process control loops
• CENTUM XL and microXL system upgrades
• Chemical plant temperature and pressure control
• Oil refinery flow and level monitoring
• Power generation auxiliary process control

FAQ

Q: What is the difference between MAC2*B and MAC2*A?
A: MAC2*B is an enhanced revision with improved signal processing, broader FIO module compatibility, and extended temperature range compared to MAC2*A.

Q: What is the difference between MAC2*B and MAC2*C?
A: MAC2*C is the latest revision with further enhancements. MAC2*B offers a balance of proven reliability and FIO compatibility for most applications.

Q: Does this card support redundant configurations?
A: Yes. The MAC2*B supports dual-redundant configurations for enhanced system reliability in critical process applications.

Q: What terminal types are used for field wiring?
A: The card uses M4 screw terminals for I/O signals and M3 screw terminals for cable shield connections.

Installation Guide

1. De-energize the DCS rack before installing the control card
2. Mount the card in the Yokogawa card nest using the guide rails
3. Secure the card with retention fasteners to prevent pin fretting
4. Connect analog input signals to the M4 screw terminals
5. Connect analog output signals to the designated output terminals
6. Terminate cable shields at the M3 shield terminal
7. Configure I/O channels in the CENTUM engineering station
8. Verify channel operation through loop checks

Selection Tips

• Select MAC2*B for FIO-compatible multipoint analog control in CENTUM systems
• For basic CENTUM XL applications, MAC2*A may be sufficient
• For the latest revision with maximum features, consider MAC2*C
• Verify your DCS software version supports Revision B hardware
• Order compatible FIO modules for expanded I/O configurations