FDC-L41 FM Approved High Limit Controls

Description

FDC L Series High Limit Control FDC-L41 1/4 DIN Limit Control provides up to three discreet setpoints, two control outputs, communication options, fast scan rates, and user-friendly prompts making it the right choice for safety protection.

The L41 offers Remote Reset as standard and offers a full range of universal high-resolution (18-bit) inputs; T/C, RTD, and linear mA/VDC inputs. Power requirement of either 90-250 VAC or optional 11-26 VAC/VDC allows the L41 to be used virtually anywhere.

Control outputs offer Form C Relay, SSR Drive, or Triac with the optional Output #2 configurable as latching, non-latching, or with alarm silence logic. Output #2 may also be specified as a transmitter power supply. Communication options offer a variety of analog retransmission or serial RS232/485 Modbus RTU.

L41 Specification Review

• Power Input:
  • 90-250VAC
  • 11-26 VAC/11-36 VDC optional
• Input sample rate – 5 scans/second
• Input:
  • Universal Thermocouple & RTD
    • Special Order linear mA/VDC [FM approval applies only to units with thermocouple or RTD input]
  • Event Input – Standard: Configurable as a Remote Reset or to Lock all parameters.
• Limit Control Output #1 – Latching:  Configurable as High Alarm, Low Alarm or combination High-Low Alarm Setpoint with one digital output. Available Digital Outputs:
  • Relay: 2A/240 VAC resistive Form C [spdt]
  • ssr driver: 5VDC/30mA
  • Triac: 1A/240 VA
• Output #2 is available with one of the following options: Digital Output [relay, triac or ssr driver] or transmitter power supply..
  • Digital Outputs are the same as output #1
  • Transmitter Power Supply [Isolated];
    • 20 VDC/25mA
    • 12 VDC/40mA
    • 5 VDC/80mA
• Communication Options; RS485 Modbus or Retransmission
  • Linear Retransmission:
    • Process or Setpoint Values
    • 0-5/1-5/0-10 VDC, 0-20/4-20mA
  • RS485 Modbus Communication with access to all parameters.
• The upper Display shows Process Variable (temperature).
• Lower Display is configurable
  • Non-alarm condition display is configurable to show the word SAFE or current Setpoint value.
  • When the process is in Alarm condition the lower display will show, dependent upon configuration, either SAFE or current Setpoint value
  • When the process goes from alarm to a non-alarm condition the lower display will revert to the configured non-alarm display; i.e. SAFE.