18
5. MAINTENANCE
As a rule, the sensor is free of maintenance. However, if the plant is subject to heavy
contamination or fur, it is advisable to establish maintenance instructions.
6. REPAIR
If the sensor is defective or damaged it must be sent to the factory.
7. TROUBLESHOOTING
FAILURE POSSIBLE
CAUSE
REMEDY
no function
no power supply
connection failure
check power supply
check connection to cable or
plug
LED works but relay don´t
switch
contacts of the relay don´t
connect or disconnect
check contacts of the relay
In spite of level change, no
changeover of LED and relay
potentiometer is set to
sensitive position
adjust potentiometer clock-
wise.
check sensor-tip, for fur, conta-
mination, broken
sensor works vice versa
wrong setting of the DIL-switch
set DIL-switch acc. to Fig. 5
We give a 12-month guarantee period for our products subject to their being made used in
accordance with this Instruction Manual.
8. SPECIFICATION
8.1. Electrical
Specifications
unit
720.0030
720.0033
power supply
V DC
24 -25/+30%
24 -25/+30%
supply current
MA 40
40
power consumption
W
VA
1
1
1
1
output, relay
- switching power
- switching voltage
- switching current
- expected life
- operating speed
W (VA)
V AC(DC)
A
-
cpm
30 (100)
250
2
>10
7
20
30 (50)
125 (150)
2
>10
8
3000
(hermetic sealed
construction)
Subject to alterations.
ING. ROLF HEUN | Meß- Prüf- Regeltechnik GmbH | Hufeisen 16 | 21218 Seevetal/Hittfeld
Tel: 04105-5723-0 | Fax: 04105-5723-66 | [email protected] | www.heun-messtechnik.com
