MODEL: L4AS
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
75
(2.95)
112
(4.41)
80
(3.15)
mm (inch)
MODEL: L4AS–[1][2][3]–[4]
ORDERING INFORMATION
•Code number: L4AS-[1][2][3]-[4]
Specify a code from below for each [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 AC, 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
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 lights turn on when the coils are 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 10
7
cycles
For maximum relay life with inductive loads, external
protection is recommended.
Rugghölzli 2
CH - 5453 Busslingen
Tel. +41 (0)56 222 38 18
Fax +41 (0)56 222 10 12
www.sentronic.com
Produkte, Support und Service
SENTRONIC
AG
