FLYGT FLS Kurulum ve Uygulama Kılavuzu - Sayfa 8

Güvenlik Sensörleri FLYGT FLS için çevrimiçi göz atın veya pdf Kurulum ve Uygulama Kılavuzu indirin. FLYGT FLS 12 sayfaları. Leakage detectors

Checking the MiniCASII

The MiniCASII can be checked by using loose sen-

sors connected to the sensor output or by simulating

the sensors using resistors.

A simple test can be performed with a resistor, for

example the one enclosed in the delivery package

(1 kohm):

Connect the MiniCASII supply input, 2 and 10, to the

correct voltage: 24 V AC/DC.

Simulating temperature alarm

If nothing is connected to the sensor outputs 5 and 7

(open circuit), the SUPPLY and TEMPERATURE

lamps are both lit. The current is obviously zero mA.

The MiniCASII has been updated at one occasion. Both versions

have part no 835857 but are easily distinguished by looking at

the circuit diagram on the side of the unit. Check the delay of the

leakage alarm.

The original version has a 5 s delay.

The updated version has a 10 s delay. This version also has an

improved noise protection. In some cases where noise, generated

by a variable frequency drive, has made the original version fail, the

new version works.

Simulating normal condition

Connect a resistor of between 1 kohm to 1,5 kohm to

the 12 VDC sensor outputs 5 and 7. If a multimeter is

available it can be connected in series with the resis-

tor (see fig.) Reset the MiniCASII by shortly connect-

ing and disconnecting a lead between outputs 2 and

6. Now, the SUPPLY lamp only should be lit.

The mA reading with a 1 kohm resistor: 12 V / 1000 ohm = 12 mA.

Simulating leakage alarm

The leakage condition can be checked by connecting

a 500 ohm (or less) resistor to the sensor outputs

5 and 7. It is fine to short circuit the output with the

multimeter or a jumper. Note that there is a 10 s

delay

before the LEAKAGE lamp is lit.

The TEMPERATURE lamp may or may not be lit

depending on if the MiniCASII has been reset.