Yokogawa PS13*B Power Supply

Configured for power conversion in industrial control architectures, the Yokogawa PS13*B (PS13*B Power Supply Module) provides direct physical/electrical execution of voltage regulation and DC distribution within automation cabinets.

Hardware Specifications

Process Control and DCS Connectivity

• 4-20 mA HART loop protocol: The power supply maintains the steady-state voltage rails required to power HART-compliant loop transmitters, ensuring that voltage ripple does not interfere with the modulation of digital diagnostic signals.
• FOUNDATION Fieldbus / Profibus PA connectivity: By providing clean DC power to segment power conditioners or fieldbus interface cards, this module ensures the signal-to-noise ratio required for deterministic fieldbus communication.
• Channel-to-channel isolation: Internal switching power stages utilize galvanic isolation to decouple the main supply from the output rails, protecting sensitive I/O backplanes from common-mode electrical noise and grid transients.
• Cold junction compensation (CJC): The module enclosure design facilitates efficient thermal dissipation, maintaining the stable reference temperatures required by adjacent analog processing modules for CJC accuracy.

Suffix Breakdown & Model Matrix

The PS13B designation utilizes a wildcard () to denote variations in input voltage requirements (e.g., AC or DC input variants) and output power configurations. Consult the specific site-wide power budget and the module data label to verify the required input/output characteristics for the intended installation.

Frequently Asked Questions

Q: Does the PS13*B support parallel operation for load sharing?

A: Parallel operation is restricted to specific hardware revisions and requires an external decoupling diode module to prevent back-feeding. Verify the system manual for load-balancing requirements before paralleling outputs.

Q: Is the unit protected against short-circuits on the output?

A: Yes, the module incorporates electronic current limiting to protect against output short-circuits. Following a fault, the unit will typically enter a hiccup or latch-off state depending on the specific revision; power cycling is required for reset.

Field Installation Guidelines

• Mounting: Secure the power supply module to the cabinet mounting plate or DIN rail. Ensure adequate air clearance (typically 50 mm) above and below the unit to allow for convective cooling during operation.
• Grounding: Bond the module chassis to the cabinet’s protective earth (PE) bus. A low-impedance ground connection is mandatory to ensure the effectiveness of internal surge protection and to maintain electromagnetic compatibility (EMC).
• Wiring: Connect input power and output DC terminals using wire sizes appropriate for the maximum rated load. Keep DC output cables physically separated from high-voltage AC input lines to prevent inductive coupling and output voltage ripple.