COM90 Datasheet, PDF (9/10 Pages) ASM GmbH – Doppel-Grenzwertschalter

Operating Instructions
Connection
1: Power supply + (24 V DC)
2: Power supply - (24 V DC) / Ground
3: Analog Input - (Ground)
4: Analog Input + (current 0/4-20mA or voltage 0-10V or 0-400 mV)
5:
6: Relay 1
7: Relay 1
8: Relay 1
The optional relay2 has tree 2.8mm flat connectors on the top of the module (KTE-version two
screw terminals).
Adjustment of Switching Limits, Status-LEDs
The two thresholds “low” and “high” are adjusted via two front-plate potentiometers. Three status LEDs show the
position of the input: input values below “low” threshold, between “low” and “high” (window) and above “high”.
DIL-Switches
Operating Mode Switch
Limit switch
2 off 3 off
Window comparator 2 on 3 off
Two-position controller 2 off 3 on
Inversion Relay 1
5 on
Inversion Relay 2
4 on
Input Switch
0-400 mV 1 off 6 off
0-10 V 1 on 6 off
0-20 mA 1 off 6 on
Note: Switch 2 and 3 may not both be simultaneously „on“.
Operating Modes
1. Limit switch: Relay 1 is controlled by the lower threshold („low“, relay 2 (if it exists) is controlled by the
upper threshold („high“). Both relays operate independently.
2. Two position controller: The switching points are calibrated via the two thresholds „low“ and „high“
(hysteresis). Applications: e.g. for level control („low“ on, „high“: off).
3. Window comparator
Factory Configuration:
Hysteresis:
ca. 0.5 %
Delay:
Minimum
Operating mode: Window comparator
Input:
Voltage 0-10 V
ASM GmbH
Tel.: [phone]
4
Fax: [phone]
www.asm-sensor.de
DAB-COM90-E-05