Yokogawa MAC2*C Multipoint Analog Control Card

Configured for multi-channel analog signal conditioning and loop control in Yokogawa CENTUM DCS networks, the Yokogawa MAC2*C (MAC2 Multipoint Analog Control Card) provides direct physical/electrical execution. The hardware operates across multiple analog input and output channels, executing real-time data conversion between field instruments and central controllers without processing lag.

Suffix Breakdown & Model Matrix

Hardware Specifications

Channel-to-Channel Isolation and DCS Process Loop Execution

The MAC2*C multipoint analog control card incorporates dedicated channel-to-channel isolation across its analog input and output paths. This isolation structure suppresses common-mode electrical noise and prevents ground potential differentials from interfering with adjacent signal paths. The card conditions 4-20 mA HART loop protocol signals, converting analog variables into digitized process values for continuous DCS logic execution.

Frequently Asked Questions

Q: What supply voltage range does the MAC2*C module require for operation?

A: The module accommodates an input supply range from 9 VDC to 36 VDC, consuming 5 W of operational power under nominal load conditions.

Q: How does channel-to-channel isolation protect the system during field loop faults?

A: Galvanic channel isolation prevents external short circuits or ground potential spikes on one field loop from propagating to the backplane or affecting signal acquisition on neighboring channels.

Q: What environmental storage conditions apply to spare MAC2*C modules?

A: Modules must be stored within a temperature range of -20 deg C to 70 deg C and a non-condensing relative humidity environment between 5% and 95% RH.

Field Installation Guidelines

1. Module Slot Alignment: Insert the MAC2*C card vertically into the designated chassis slot using the card guide rails. Press firmly until the rear connector seats into the backplane socket.
2. Power Supply Connection: Verify that the supply voltage to the power terminals is regulated between 9 VDC and 36 VDC prior to energizing the unit.
3. Cable Shield Termination: Route analog input and output lines using twisted pair shielded wiring. Ground cable drain wires to the functional earth (FE) cabinet ground bar at a single termination point.
4. Thermal Spacing: Maintain unobstructed ventilation pathways above and below the module rack to preserve ambient operating temperatures between -10 deg C and 55 deg C.