GE IS220PPRAS1B Mark VIe Emergency Turbine Protection Module
Manufacturer: GE Fanuc
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Part Number: IS220PPRAS1B
Condition：New with Original Package
Product Type: Pulse Rate Input Modules
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
GE IS220PPRAS1B Mark VIe Module
Configured for pulse rate data acquisition and overspeed protection in GE Mark VIe control loops, the General Electric IS220PPRAS1B, also cataloged as the IS220PPRAS1B Emergency Turbine Protection (PPRA) I/O Pack, provides direct physical/electrical execution. It interfaces directly with speed sensors and proximity probes to deliver turbine monitoring metrics, phase reference signals, and real-time diagnostic outputs to the master controller via deterministic Ethernet links.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | IS220PPRAS1B |
| Brand | General Electric |
| Origin | USA |
| Weight | 0.45 kg |
| Dimensions | 233 x 100 x 25 mm |
| Operating Temp | -30 to +65 deg C |
| Power Consumption | 28 VDC via backplane |
| Product Type | Emergency Turbine Protection (PPRA) I/O Pack |
| Inputs | 2 magnetic pickup channels, 2 proximity probe channels |
| Signal Type | Pulse signals (0.5 to 32 V peak) |
| Frequency Range | 0.1 Hz to 20 kHz |
| Resolution | 1 microsecond timing accuracy |
| Phase Reference | 1 phase reference input channel |
| Isolation | 1500 VAC channel-to-system for 1 min |
| Communication | Ethernet 10/100 Mbps |
| Humidity Range | 5 to 95% RH, non-condensing |
| Mounting | DIN-rail or panel mounting |
Industrial Control and Drive Attributes
The IS220PPRAS1B operates within the Mark VIe control infrastructure, adhering strictly to backplane bus communication velocity guidelines. This architecture ensures deterministic network performance when routing frequency inputs to the dual-channel sub-systems. Signal data integrity is maintained across the high-density I/O footprint via precise time-stamping mechanics, matching structural firmware flash compatibility constraints mandated by the host Mark VIe processing core.
Frequently Asked Questions
Q: Does the module support hot-swap replacement under live control backplane conditions?
A: Hot-swap capability is dependent on the specific Mark VIe I/O rack configuration and firmware revision level. The hardware must be unpowered at the local terminal or set to an inactive state in the controller software prior to physical extraction to prevent disruption of the redundant Ethernet network loops.
Q: How is channel-to-channel cross-talk mitigated given the 20 kHz maximum frequency threshold?
A: Cross-talk suppression and electrical isolation are handled internally by dedicated 1500 VAC isolation barriers per channel group, isolating input circuits from backplane logic and adjacent phase reference tracking paths.
Q: What is the maximum recommended cable length for the magnetic pickup inputs?
A: Cable runs depend heavily on electromagnetic interference and conductor capacitance. Standard field practice dictates maintaining shielded twisted-pair routing under 300 meters, ensuring signal amplitude remains above the 0.5 V peak minimum threshold at the module terminals.
Field Installation Guidelines
- Mount the hardware horizontally or vertically on standard 35 mm DIN-rails or dedicated panel backplates using designated chassis grounding clips.
- Terminate all instrumentation cables using individual shielded twisted-pair wiring. Strip shield jackets near the module terminal block and clamp them firmly to the structural ground busbar. Do not float the shield at both ends.
- Separate low-voltage pulse input cables from high-voltage AC distribution lines or variable frequency drive outputs by at least 30 cm to prevent inductive noise injection.
- Verify the 28 VDC input distribution power at the backplane connectors matches specifications before engaging the module latch mechanism.