L4AS MSYSTEM | Alldatasheet

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Technical content

MODEL: L4AS L4AS SPECIFICATIONS ES-1991 Rev.5 Page 1/4 http://www.m-system.co.jp/ Plug-in Signal Conditioners M-UNIT QUAD DC ALARM Functions & Features

  • Providing relay contact closures at preset DC input levels
  • 4 setpoints: Hi/Hi, Hi, Lo, Lo/Lo
  • Single turn screwdriver or dial setpoint adjustments
  • Enclosed relays
  • Relays can be powered 110 V DC
  • Isolation up to 2000 V AC
  • High-density mounting Typical Applications
  • Annunciator
  • Various alarm applications (2.95) 112 (4.41) (2.95) mm (inch) 100 3 4 100 100 100 MODEL: L4AS–[1][2][3]–[4]

ORDERING INFORMATION

  • Code number: L4AS-[1][2][3]-[4] Specify a code from below for each of [1] through [4]. (e.g. L4AS-1A1-R) [1] SETPOINT ADJUSTMENTS 1: Single-turn screws 2: Dials [2] INPUT Current A: 4 – 20 mA DC (Input resistance 250 Ω) Voltage 6: 1 – 5 V DC (Input resistance 1 MΩ min.) [3] OUTPUT 1: 4 points; coil energized with input > setpoint 2: 2 points; coil energized with input < setpoint 2 points; coil energized with input > setpoint [4] POWER INPUT AC Power K: 85 – 132 V AC (Operational voltage range 85 – 132 V, 47 – 66 Hz) L: 170 – 264 V AC (Operational voltage range 170 – 264 V, 47 – 66 Hz) DC Power R: 24 V DC (Operational voltage range 24 V ±10 %, ripple 10 %p-p max.) P: 110 V DC (Operational voltage range 85 – 150 V, ripple 10 %p-p max.) GENERAL SPECIFICATIONS Construction: Stand-alone; terminal access at the front Connection: M3.5 screw terminals (torque 0.8 N·m) Housing material: Flame-resistant resin (black) Isolation: Input to output to power Setpoint adjustments: Single-turn screwdriver adjustments or dials (front); -15 – +115 % independently Hysteresis (deadband): Approx. 1 % Front LEDs: Red LED turns on when the coil is energized. INPUT SPECIFICATIONS ■ DC Current: Input resistor incorporated OUTPUT SPECIFICATIONS ■ Relay Contact: 100 V AC @ 1 A (cos ø = 1)

120 V AC @ 1 A (cos ø = 1)

240 V AC @ 0.5 A (cos ø = 1)

30 V DC @ 1 A (resistive load)

Maximum switching voltage: 380 V AC or 125 V DC Maximum switching power: 120 VA or 30 W Minimum load: 5 V DC @ 10 mA Mechanical life: 5 x 107 cycles For maximum relay life with inductive loads, external protection is recommended.

MODEL: L4AS L4AS SPECIFICATIONS ES-1991 Rev.5 Page 2/4 http://www.m-system.co.jp/ Alarm Trip Operation Terminal No. in parentheses 0 50 100 Input (%) No.1 No.2 No.3 No.4 Output 1 (3–5)ON (3–4)ON Output 2 (6–8)ON (6–7)ON Output 3 (11–13)ON Output 4 (11–12)ON (14–15)ON (14–16)ON

  • Output Code : 2 Trip Operation in Power Failure: Terminals 3 – 5, 6 – 8, 11 – 13 and 14 – 16 turn ON. 0 50 100 Input (%) No.1 (LL) No.2 (L) No.3 (H) No.4 (HH) Output 1 (3–4)ON (3–5)ON Output 2 (6–8)ON (6–7)ON Output 3 (11–13)ON Output 4 (11–12)ON (14–15)ON (14–16)ON
  • Output Code : 1 Trip Operation in Power Failure: Terminals 3 – 5, 6 – 8, 11 – 13 and 14 – 16 turn ON. INSTALLATION Power consumption
  • AC: Approx. 4.5 VA
  • DC: Approx. 2 W (80 mA at 24 V) Operating temperature: -5 to +55°C (23 to 131°F) Operating humidity: 30 to 90 %RH (non-condensing) Mounting: Surface or DIN rail Weight: 350 g (0.77 lb) PERFORMANCE in percentage of span Setpoint accuracy: ±0.3 % Temp. coefficient: ±0.05 %/°C (±0.03 %/°F) Response time: ≤ 0.5 sec. (0 – 100 % at 90 % setpoint) Line voltage effect: ±0.1 % over voltage range Insulation resistance: ≥ 100 MΩ with 500 V DC Dielectric strength: 2000 V AC @1 minute (input to output to power to ground)

MODEL: L4AS L4AS SPECIFICATIONS ES-1991 Rev.5 Page 3/4 http://www.m-system.co.jp/ MOUNTING REQUIREMENTS 2–M5 60 (2.36) 75 (2.95) MIN. 60 (2.36) 60 (2.36) ˙M5 SCREWS 2–M4 60 (2.36) 75 (2.95) MIN. 60 (2.36) 50 (1.97) ˙M4 SCREWS EXTERNAL VIEW Monitor LED Setpoint Adj. Monitor LED Setpoint Adj. ■ SCREWDRIVER ADJUSTMENTS ■ DIAL ADJUSTMENTS 1 2 3 4 1 2 3 4 EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch) DIN RAIL 35mm wide 14 * (.55) 8 (.31) 16–M3.5 SCREW TERMINAL COVER 2–5.8 (.23) dia. or 2–4.8 (.18) dia. MTG HOLE 8 (.31) deep *Dial adj. 75 (2.95) 75 (2.95) 9 10 11 12 13 14 15 16 1 2 3 4 5 6 7 8 3 (.12) 1(.04)

  • When mounting, no extra space is needed between units.

MODEL: L4AS L4AS SPECIFICATIONS ES-1991 Rev.5 Page 4/4 http://www.m-system.co.jp/ SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM Ry Ry Ry U(+) V(–) POWER Comparator+ INPUT

1 Low Drift

*Input shunt resistor incorporated for current input.

  • DC Powered Relay Protection
  • AC Powered Comparator Comparator Comparator No.1 SET No.2 SET No.3 SET No.4 SET ALARM OUTPUT 2 ALARM OUTPUT 3 ALARM OUTPUT 4 Ry Inductive Load (Coil) Varistor or Spark Quenching Circuit U LOAD Inductive Load (Coil) LOAD Diode, Varistor or CR Circuit Specifications are subject to change without notice.