Configured for primary AC power conversion and stable DC distribution in CENTUM VP control nodes, the Yokogawa PW482-50 (PW482 Power Supply Module) provides direct physical/electrical execution.
Suffix Breakdown & Model Matrix
Parameter / Suffix Code
Specification Breakdown
Base Model (PW482)
220 - 240 V AC Input Power Supply Module (with Temperature option)
Protection (-5)
Standard type with no explosion protection
Type Code (-0)
Basic type
Hardware Specifications
Parameter
Specification
Model
PW482-50
Brand
Yokogawa
Origin
Japan
Weight
Approx. 1 kg (Shipping Weight 2 kg)
Dimensions
Standard CENTUM VP rack-mount power module form factor
Operating Temp
-20 to 70 deg C
Power Consumption
220 - 240 V AC input rating
Input Voltage
220 - 240 V AC
Explosion Protection
Standard type with no explosion protection
4-20 mA HART Loop Protocol & Galvanic Isolation
The module provides galvanic isolation barriers between the high-voltage AC utility supply and downstream backplane electronics, preventing electrical noise propagation into field signal processing loops. Integrated power filtering circuits minimize common-mode disturbance, maintaining signal stability for connected analog I/O nodes operating on 4-20 mA HART loop protocol architectures. Internal regulating loops stabilize power outputs against supply voltage fluctuations to protect critical logic components.
Frequently Asked Questions
Q: Does the PW482-50 support dual-redundant operation within a single rack chassis?
A: Yes, two PW482-50 power supply modules can be installed side-by-side on a redundant system backplane to provide fault-tolerant load sharing and online hot-swapping capabilities.
Q: What grounding precautions must be observed during power line termination?
A: The AC protective earth (PE) terminal must connect directly to the main cabinet ground bus bar via a low-impedance conductor with a minimum cross-sectional area of 2.5 mm sq to ensure EMI suppression and safety isolation.
Field Installation Guidelines
Mount the PW482-50 module securely into the designated power slot on the chassis frame, verifying complete connector alignment before tightening the locking mechanism to 0.5 Nm torque. Route incoming 220 - 240 V AC power cables in separate wire trays, maintaining a minimum 150 mm physical separation from sensitive analog and digital signal wiring. Connect the main protective earth wire directly to the cabinet ground bar using standard copper conductors. Ensure unobstructed vertical airflow across the chassis to allow adequate convection cooling across the extended -20 to 70 deg C operating range.
