YOKOGAWA PW481-50 CENTUM VP series Power Supply Modules
Configured for high-efficiency primary power conversion in CENTUM VP control station nodes, the Yokogawa PW481-50, also cataloged as the PW481 Power Supply Module, provides direct physical/electrical execution. It transforms field AC distribution voltages into regulated DC power rails required by local backplane bus communications and field I/O cards.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | PW481-50 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 1.5 kg |
| Dimensions | Standard CENTUM VP node slot format |
| Operating Temp | 0 to 50 deg C |
| Power Consumption | 100 VA max |
| Input Voltage | 100-120 VAC (85-132 VAC range), 50/60 Hz |
| Output Voltage | 24 VDC bus supply |
| Mounting | CENTUM VP node unit backplane slot |
4-20 mA HART Loop Protocol & Channel-to-Channel Isolation
The PW481-50 supplies isolated system bus voltage across the CENTUM VP backplane to prevent common-mode noise transfer from field instrument lines. Integrated internal power regulation circuits maintain steady line voltage to adjacent analog input and output cards running 4-20 mA HART loop communication networks. Electromagnetic interference (EMI) filtering on the main power feed prevents high-frequency line transients from disrupting channel-to-channel isolation barriers or introducing signal jitter on process loops.
Frequently Asked Questions
Q: Can the PW481-50 power supply module be installed or replaced while the system node is operational?
A: Yes, in a dual-redundant power configuration within a Yokogawa CENTUM VP node, a failed PW481-50 module can be hot-swapped without interrupting power to the backplane or disrupting online control operations.
Q: What are the input voltage tolerances for the PW481-50 module?
A: The module accepts an input rating of 100-120 VAC with an allowable operating range of 85 to 132 VAC at 47 to 63 Hz frequency limits.
Field Installation Guidelines
- Verify that the node chassis main earth terminal is connected to a low-impedance system ground according to standard industrial earthing regulations prior to mounting the power supply.
- Insert the PW481-50 firmly into its designated node slot until the backplane connectors seat completely, then tighten the top and bottom retaining screws to 0.5 Nm torque.
- Ensure line input wiring is properly stripped and secured under the terminal blocks. Maintain physical separation between raw AC power supply lines and low-voltage field instrument cabling.
YOKOGAWA PW481-50 CENTUM VP series Power Supply Modules
YOKOGAWA PW481-50 CENTUM VP series Power Supply Modules
Configured for high-efficiency primary power conversion in CENTUM VP control station nodes, the Yokogawa PW481-50, also cataloged as the PW481 Power Supply Module, provides direct physical/electrical execution. It transforms field AC distribution voltages into regulated DC power rails required by local backplane bus communications and field I/O cards.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | PW481-50 |
| Brand | Yokogawa |
| Origin | Japan |
| Weight | 1.5 kg |
| Dimensions | Standard CENTUM VP node slot format |
| Operating Temp | 0 to 50 deg C |
| Power Consumption | 100 VA max |
| Input Voltage | 100-120 VAC (85-132 VAC range), 50/60 Hz |
| Output Voltage | 24 VDC bus supply |
| Mounting | CENTUM VP node unit backplane slot |
4-20 mA HART Loop Protocol & Channel-to-Channel Isolation
The PW481-50 supplies isolated system bus voltage across the CENTUM VP backplane to prevent common-mode noise transfer from field instrument lines. Integrated internal power regulation circuits maintain steady line voltage to adjacent analog input and output cards running 4-20 mA HART loop communication networks. Electromagnetic interference (EMI) filtering on the main power feed prevents high-frequency line transients from disrupting channel-to-channel isolation barriers or introducing signal jitter on process loops.
Frequently Asked Questions
Q: Can the PW481-50 power supply module be installed or replaced while the system node is operational?
A: Yes, in a dual-redundant power configuration within a Yokogawa CENTUM VP node, a failed PW481-50 module can be hot-swapped without interrupting power to the backplane or disrupting online control operations.
Q: What are the input voltage tolerances for the PW481-50 module?
A: The module accepts an input rating of 100-120 VAC with an allowable operating range of 85 to 132 VAC at 47 to 63 Hz frequency limits.
Field Installation Guidelines
- Verify that the node chassis main earth terminal is connected to a low-impedance system ground according to standard industrial earthing regulations prior to mounting the power supply.
- Insert the PW481-50 firmly into its designated node slot until the backplane connectors seat completely, then tighten the top and bottom retaining screws to 0.5 Nm torque.
- Ensure line input wiring is properly stripped and secured under the terminal blocks. Maintain physical separation between raw AC power supply lines and low-voltage field instrument cabling.
