Woodward PEAK200‑HVAC 8200‑1501

Key Features

  • HVAC‑Optimized Control: Dual PID dynamics for speed/load and cascade PID for chiller/boiler pressure/flow control to match thermal demand.
  • 5” Graphical HMI: Displays setpoint/actual values, trends, and alarms on one screen; 8‑button keypad for local configuration.
  • Bumpless Mode Transfers: PID‑to‑PID logic ensures stable transitions between speed, load, and cascade modes during HVAC load swings.
  • Overspeed Protection: Peak speed indication, overspeed test capability, and initial valve limiter to prevent turbine damage during start‑up.
  • Critical Speed Avoidance: 1 configurable speed band (100–10,000 rpm) to bypass resonant frequencies and reduce vibration.
  • Redundant Speed Sensing: Accepts 2 magnetic speed sensors for fail‑safe operation in critical HVAC systems.
  • First‑Out Alarm Logging: Captures 100+ time‑stamped events to speed troubleshooting of shutdowns (e.g., overspeed, high bearing temp).
  • Modbus Integration: Dual Ethernet (Modbus TCP) and serial (Modbus RTU) ports for seamless BMS/DCS connectivity.
  • Sulfur‑Resistant Coating: Polyacrylate coating protects PCBs from corrosive HVAC environments (ISA S71.04 G2).
Category:
Description

Technical Specifications

Parameter Details
Product Series PEAK200‑HVAC (8200‑1501), HVAC‑optimized steam turbine controller
Power Supply 88–264 Vac (50/60 Hz) or 90–150 Vdc; power consumption 30 W @ 25°C; reverse polarity protected
Speed Control Range 100–10,000 rpm; speed accuracy ±0.1% of setpoint; supports 2 redundant magnetic speed sensors (100–10,000 PPR)
Analog Inputs 4–20 mA (3 inputs): speed setpoint, load reference, cascade process signal; input impedance 250 Ω
Analog Outputs 3×4–20 mA (valve position, speed feedback, load); 2 additional outputs via LinkNet‑HT I/O modules
Discrete I/O 8 digital inputs (start, stop, E‑Stop); 4 relay outputs (alarm, trip, run, ready); 24 Vdc wetting voltage
Communication Interfaces Ethernet: 2 ports (Modbus TCP/UDP); Serial: 1 Modbus RTU/ASCII (RS‑232/RS‑485); CAN: 2 ports (LinkNet‑HT protocol)
HMI & Display 5” color graphical display; 8‑button keypad; real‑time trend viewing; alarm/trip log storage (100+ events)
Safety Ratings Class 1 Div 2 (Groups A–D); Zone 2; IEC 61010‑1 compliant; overspeed trip settable up to 115% of rated speed
Environmental Ratings Operating temp: -40°C to 70°C (-40°F to 158°F); storage: -40°C to 85°C; humidity 0–95% non‑condensing
Physical Form Factor Panel‑mount; dimensions 254 mm × 178 mm × 102 mm; weight 2.0 kg; pluggable terminal blocks for wiring
Certifications CE, UL/cUL Listed; sulfur‑resistant conformal coating (ISA S71.04 G2/IEC 721‑3‑3 3C2)

Functional Capabilities

  • Automatic/Manual Start Sequencing: Executes warm‑up, acceleration, and valve limiting; skips critical speed bands to avoid damage.
  • Cascade Pressure/Flow Control: Adjusts turbine speed/load via 4–20 mA process signals to maintain chiller return water temp or boiler steam pressure.
  • Overspeed Test Routine: Reduced setpoint test validates overspeed trip without exceeding 110% of rated speed.
  • Bearing/Vibration Monitoring: Integrates with LinkNet‑HT I/O to monitor RTD bearing temps and 4–20 mA vibration sensors; triggers alarms/trips on high readings.
  • SNTP Time Sync: Synchronizes real‑time clock with BMS via Ethernet to align alarm logs with system events.
  • Password Protection: 3 user access levels prevent unauthorized changes to setpoints, PID gains, and safety thresholds.
  • Valve Position Limiting: Restricts valve travel during start‑up and upsets to prevent overshoot and mechanical stress.
  • Fault Recovery: Automatically returns to safe state (idle) on power loss or sensor failure; logs fault codes for post‑event analysis.

Application Scenarios

  • Commercial Building HVAC: Controls steam turbines driving chillers/boilers in hotels, hospitals, and office towers to maintain temperature and reduce energy costs.
  • District Energy Systems: Manages turbine speed for steam flow balancing across multiple buildings in urban district heating/cooling networks.
  • Data Center Cooling: Regulates turbine‑driven chillers to match dynamic heat loads while ensuring redundant cooling capacity.
  • Industrial HVAC: Operates in Class 1 Div 2 environments (chemical plants, refineries) to control turbine‑powered ventilation and process cooling systems.
  • Cogeneration (CHP) HVAC: Balances steam flow for combined heat and power systems, optimizing heat recovery and electrical output.
  • Retrofit Projects: Direct replacement for PEAK150 controllers, retaining form‑fit‑function and wiring to minimize downtime.

Configuration & Maintenance

  • Local HMI Setup: Uses 5” display and keypad to set speed setpoints, PID gains, critical speed bands, and alarm/trip thresholds.
  • PC‑Based Programming: Configures via Woodward RemoteView/Control Assistant to upload/download settings, view trends, and log alarms.
  • LinkNet‑HT Expansion: Adds RTD/bearing temp and vibration monitoring via CANopen‑based I/O modules.
  • Sensor Calibration: Auto‑calibrates to redundant speed sensors; triggers loss‑of‑signal alarms if both sensors fail.
  • Firmware Updates: Field‑upgradable via Ethernet/USB to add HVAC‑specific features (e.g., demand‑based load shedding).
  • Troubleshooting: First‑out indication and LED status lights (power, comms, alarm, trip) enable quick on‑site diagnostics.
  • Replacement: Pluggable terminal blocks allow fast module swap without rewiring; retains configuration for minimal downtime.
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