18AR MSYSTEM | Alldatasheet

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MODEL: 18AR 18AR SPECIFICATIONS ES-1764 Rev.5 Page 1/4 http://www.m-system.co.jp/ Rack-mounted DCS Signal Conditioners 18-RACK RTD ALARM Functions & Features

  • Providing relay contact closures at preset input levels
  • Direct input from an RTD
  • Burnout protection
  • Single or dual (Hi/Lo) trip
  • Front-accessed screwdriver setpoint adjustments
  • Enclosed relays Typical Applications
  • Annunciator
  • Various alarm applications MODEL: 18AR–[1][2]–R[3]

ORDERING INFORMATION

  • Code number: 18AR-[1][2]-R[3] Specify a code from below for each of [1] through [3]. (e.g. 18AR-45-R/BL)
  • Temperature range (e.g. 0 – 250°C) Use Ordering Information Sheet (No. ESU-1033) to specify alarm output code 0 specifications. [1] INPUT RTD (2- or 3-wire) 1: JPt 100 (JIS'89) (Usable range: -200 to +500°C, -328 to +932°F; min.span: 30°C, 54°F) 3: Pt 100 (JIS'89) (Usable range: -200 to +650°C, -328 to +1202°F; min.span: 30°C, 54°F) 4: Pt 100 (JIS'97, IEC) (Usable range: -200 to +650°C, -328 to +1202°F; min.span: 30°C, 54°F) 5: Pt 50 Ω (JIS'81) (Usable range: -200 to +500°C, -328 to +932°F; min.span: 60°C, 108°F) 6: Ni 508.4 Ω (Usable range: -50 to +200°C, -58 to +392°F; min.span: 20°C, 36°F) 0: Specify Note: Consult M-System for 2-wire RTD [2] ALARM OUTPUT 1: Hi (coil energized at alarm) 2: Hi (coil de-energized at alarm) 3: Lo (coil energized at alarm) 4: Lo (coil de-energized at alarm) 5: Hi/Lo; N.O., OFF in power failure (connector output not available) 6: Hi/Lo; N.C., OFF in power failure (connector output not available) 0: Specify POWER INPUT DC Power R: 24 V DC (Operational voltage range 24 V ±10 %, ripple 10 %p-p max.) [3] OPTIONS Burnout blank: Upscale burnout /BL: Downscale burnout GENERAL SPECIFICATIONS Construction: Rack-mounted; terminal access via screw terminals on the front and connector on the rear; terminal cover provided Connection Input: M3.5 screw terminals (torque 0.8 N·m) Alarm output: M3.5 screw terminals (torque 0.8 N·m) and connector Power input: Supplied from connector Screw terminal: Nickel-plated steel Isolation: Input to output to power Relay: Enclosed Setpoint adjustments: Multi-turn screwdriver adjustments (front); -5 – +105 % independently Hysteresis (deadband): Approx. 1 % Front LEDs: Red LED turns on when the coil is energized. INPUT SPECIFICATIONS Maximum leadwire resistance: 20 Ω per wire (3-wire) Sensing current: 2 mA (Pt)

MODEL: 18AR 18AR SPECIFICATIONS ES-1764 Rev.5 Page 2/4 http://www.m-system.co.jp/ OUTPUT SPECIFICATIONS Output: Enclosed SPST and SPDT relays Rating: 120 V AC @ 1 A (cos ø = 1)

30 V DC @ 1 A (resistive load)

0.2 A maximum for the connector output

Maximum switching voltage: 120 V AC or 30 V DC Max. switching power: 120 VA or 30 W (24 VA or 6 W for the connector output) Minimum load: 5 V DC @ 10m A Mechanical life: 5 × 107 cycles 5 – 6 5 – 7 F F ON Od e z i g r e n E De-energized (or power OFF) OFF ON ALARM OUTPUT CODE POWER ON POWER OFF IN < SET IN > SET

1 OFF ON OFF

2 OFF ON ON

3 ON OFF OFF

4 ON OFF ON

  • Single Alarm Front terminals Rear connector ALARM OUTPUT CODE POWER ON POWER OFF IN < SET IN > SET 5 – 6 7 – 8 5 – 6 7 – 8 5 – 6 7 – 8

5 ON OFF OFF ON OFF OFF

6 OFF ON ON OFF OFF OFF

Shades indicates that the relay is energized.

  • Dual Alarm (front terminals) INSTALLATION Current consumption: Approx. 80 mA Operating temperature: -5 to +55°C (23 to 131°F) Operating humidity: 30 to 90 %RH (non-condensing) Mounting: Standard Rack 18BXx or 18KBXx Weight: 150 g (0.33 lb) PERFORMANCE in percentage of span Trip point repeatability: ±0.1 % Temp. coefficient: ±0.015 %/°C (±0.008 %/°F) Response time: ≤ 0.5 sec. (0 – 100 % at 90 % setpoint) Burnout response: ≤ 10 sec. Line voltage effect: ±0.1 % over voltage range Insulation resistance: ≥ 100 MΩ with 500 V DC Dielectric strength: 1500 V AC @ 1 minute (input to output or power)

500 V AC @ 1 minute (output to power)

1500 V AC @ 1 minute (input or output or power to ground)

MODEL: 18AR 18AR SPECIFICATIONS ES-1764 Rev.5 Page 3/4 http://www.m-system.co.jp/ EXTERNAL VIEW High Setpoint Adj. Low Setpoint Adj. ■ SINGLE ALARM 8 7 1 2 4 3 Hi Alarm Indicator ■ DUAL ALARM Lo Alarm Indicator Setpoint Adj. 8 7 1 2 4 3 Indicator EXTERNAL DIMENSIONS unit: mm (inch) 110 (4.33 ) 93 (3.66) 24 (.94) 7 (.28) 78 (3.07)32 (1.26) 8–M3.5 SCREW 7 (.28) 2–M3 SCREW TERMINAL ASSIGNMENTS 1 2 3 4 7 8 5 6

MODEL: 18AR 18AR SPECIFICATIONS ES-1764 Rev.5 Page 4/4 http://www.m-system.co.jp/ SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM Comparator OUTPUT 5CONNECTOR SETPOINT ADJ. POWER HI / LO Output *Ry H COM 7 L ■ SINGLE ALARM *Relay status is determined by output codes. Comparator LO OUTPUT 5CONNECTOR SETPOINT ADJ. POWER Ry ■ DUAL ALARM Comparator SETPOINT ADJ. Ry HI OUTPUT LOAD Inductive Load (Coil) Varistor or Spark Quenching Circuit

  • DC Powered LOAD Inductive Load (Coil) Diode, Varistor or CR Circuit ■ Relay Protection
  • AC Powered Burnout A B B RTD 3 2mA2mA Differential Amplifier Reference Resistor Burnout A B B RTD 3 2mA2mA Differential Amplifier Reference Resistor U Specifications are subject to change without notice.