3701/55 ADAPT (ESD) Emergency Shutdown Device

Description

The 3701/55 Emergency Shutdown Device (ADAPT ESD) is a safety PLC with a graphical logic programming interface and integrated overspeed detection. It is designed for emergency shutdown of rotating machinery such as steam, gas, and hydro turbines, expanders, and other process equipment. ADAPT ESD is a compact, standalone, triple-redundant safety shutdown device that is designed to meet a broad range of user scenarios and applications. The design offers an electrical and mechanical package with attention to reliability and availability as well as extensive self-diagnostics and compliance to industry standards.

Features

• Graphical logic programming interface
• Integrated overspeed detection
• Compact, standalone, triple-redundant design
• Designed for emergency shutdown of rotating machinery
• Attention to reliability, availability, and extensive self-diagnostics
• Compliance with industry standards

Specifications

Communication

• Ethernet: 6 Ports 10/100 Mbps
• Protocol: TCP/IP
• Addressing: DHCP and Static IP
• LAN/WAN Configuration Modification: Password Protected
• Time Synchronization: NTP

Power Requirements

• Input Range: 18 - 36 Vdc
• Voltage Power Consumption: 24 W Typical / 35 W Maximum
• For Hazardous Area installations, the supply must be appropriately certified to the local national standards.

Signal Input Specifications

Discrete Inputs

• Two-Terminal, Dry Contact Polarity Independent
• A/B Terminals for dry contacts
• Closed State Impedance: 57 KΩ Maximum
• Open State Impedance: 187 KΩ Minimum
• Low Voltage Input: 1.2 Vdc Maximum for externally wetted signals
• High Voltage Input: 2.9 Vdc Minimum for externally wetted signals
• Internal Wetting Voltage: 10 - 15 Vdc
• Input Resistance: 150 KΩ Typical
• Faulted Input Tolerance: ±40 V

Analog Inputs

• Full Scale Range: 4-20 mA ±1%
• Polarized Terminals Pos 'B'/Neg 'A'
• Typical Operating Frequency: 0-159 Hz
• Common Mode Input Range: ±32 V
• Differential Input Range: 0-25 mA
• Faulted Input Tolerance: ±40 V

Proximity Speed Inputs

• Auto Threshold and Hysteresis
• Input Voltage Range: 0 to -24Vdc
• Transducer Power Supply: Typical -24Vdc (-23.5Vdc to -24.75Vdc over operating range)
• Max Transducer Current: 30mA with current fold-back protection
• Operating Frequency: 3Hz – 10kHz
• Minimum Pulse Amplitude: 1.0 Vpp
• Maximum Pulse Amplitude: 24 Vpp
• Error:
  • +/-0.1 RPM Below 100RPM
  • +/-1.0 RPM Below 10kRPM
  • +/-0.01% FSR >10kRPM
• OK Checking:
  • -17Vdc to –1.5Vdc OK
  • Above -1.5Vdc NOT OK
  • Below -17Vdc NOT OK

Dimensions

ADAPT ESD System

• Length x Width x Height: 25.4 x 30.48 x 18.0 cm (10.0 x 12.0 x 7.1 in)

Processing Module

• Length x Width x Height: 15.8 x 6.1 x 15.8 cm (6.2 x 2.4 x 6.2 in)

Relay Output Module

• Length x Width x Height: 15.8 x 2.8 x 15.8 cm (6.2 x 1 .1 x 6.2 in)

Weight

• ADAPT ESD System: 8.8 kg (19.4 lb)
• Processing Module: 1.2 kg (2.6 lb)
• Relay Output Module: 0.6 kg (1.3 lb)