Amatrol 890-FTS1 Manual Download Page 10

Page: 10 / 12

L17401-CL06JEN-E2-S02, REV. C INTRODUCTION TO TROUBLESHOOTING
Copyright © 2019 Amatrol, Inc.

S02-10

SKILL 2 TEST A MANUAL SWITCH



16. Perform the following substeps to test the upper set of contacts of selector

switch SS1 using the out-of-circuit test procedures.

A. Rotate the selector switch

SS1

operator to the center position.

In this position, the upper contacts of this switch should be open.

B. Place the multimeter leads into the terminals of the upper contacts of SS1,

as shown in fi gure 2-6, and record the measurement.

SS1 Resistance (operator in center) ______________________ (Ohms)

If the contacts are good, the resistance should be infi nite (open). This is
the fi rst step of testing the selector switch. The next step is to test it when
the operator is switched.

Figure 2-6. Selector Switch SS1 Contacts Test Method

COM

OPERATOR STATION

PN 17320

EARTH

GND

SS1

PB3

PB2

PB1

Summary of Contents for 890-FTS1

Page 1: ...al fault insertion skip to step 3 2 Perform the following substeps to set up the 890 FTS1 Troubleshooting System with a power cord A Make sure the troubleshooting system is plugged into a wall outlet B Make sure the troubleshooting system is turned off C Locate the fault terminals at the rear of the Operator Station on the 85 MT5 trainer D Make sure that the fault cables are connected to the 85 MT...

Page 2: ...fault terminals on the operator station has a standard jumper plug inserted 4 Perform the following substeps to test the N O contacts of pushbutton PB1 in an out of circuit test A Locate your multimeter and set it to measure resistance B Make sure that no leads are connected to the plug in jacks on the front panel of the Operator Station If there are disconnect them 890 FTS1 TROUBLESHOOTING SYSTEM...

Page 3: ...s shown in figure 2 2 and record the measurement PB1 Resistance not pressed ____________________________ Ohms If the pushbutton is good the resistance should be infinite open This is the first step of testing the pushbutton The next step is to test it when the operator is pressed Figure 2 2 Pushbutton PB1 N O Contacts Out of Circuit Test COM Ω Ω OPERATOR STATION PN 17320 EARTH GND SS1 PB3 PB2 PB1 ...

Page 4: ...meter leads on the pushbutton s N O contact block as shown in figure 2 3 NOTE The contact blocks for the pushbutton switches and the selector switch simply snap into place This makes them easy to replace when necessary Figure 2 3 Actual Measurement of Contacts 5 Perform the following substeps to insert a fault into PB1 in the single fault mode and test it A If you are using manual fault insertion ...

Page 5: ...____________ Ohms Component Status _________________________________ Good Bad This time you should find that the multimeter measures zero resistance in both conditions This means that there is a short in the contacts The component is bad K Click the Clear Fault button to clear the fault or remove the fault plug With the FaultPro software the fault will clear and the fault status field should chang...

Page 6: ... bad Q Click the Clear Fault button to clear the fault or remove the fault plug With the FaultPro software the fault will clear and the fault status field should change to Fault 7 is cleared If you are using manual fault insertion remove the open plug from terminal 7 and replace it with the standard jumper plug 6 Now test the N C contacts of PB2 Use the same out of circuit test procedure as in ste...

Page 7: ...tacts 7 If you are using manual fault insertion obtain a short fault plug and plug it into the station fault terminal labeled 8 in place of the standard jumper plug If you are using the FaultPro software type 8 in the Enter Fault field and press the Enter key or click to activate the fault Fault 8 is now active This will cause a short in the N C contacts of PB2 This condition can occur if the cont...

Page 8: ...d the fault status field should change to Fault 8 is cleared 10 Repeat step 8 again to test the contacts PB2 Resistance not pressed ______________________________ Ohms PB2 Resistance pressed _________________________________ Ohms Component Status ___________________________________ Good Bad You should find that the contacts are now operating normally again So far you have faulted N C contacts to t...

Page 9: ...____________________ Ohms Component Status ___________________________________ Good Bad You should find that the contacts are now bad because the resistance reads infinite in both conditions 14 Click the Clear Fault button to clear the fault or remove the fault plug and replace it with the standard jumper plug The fault will clear and the fault status field should change to Fault 9 is cleared 15 N...

Page 10: ...sition the upper contacts of this switch should be open B Place the multimeter leads into the terminals of the upper contacts of SS1 as shown in figure 2 6 and record the measurement SS1 Resistance operator in center ______________________ Ohms If the contacts are good the resistance should be infinite open This is the first step of testing the selector switch The next step is to test it when the ...

Page 11: ...ws Figure 2 7 Actual Measurement of Contacts C Rotate the selector switch to the left position and record the resistance SS1 Resistance operator in left ________________________ Ohms If the contacts are good the resistance should be at or near zero This shows that the contacts are closing when the operator is switched This selector switch should be good COM Ω Ω N O CONTACT BLOCK ...

Page 12: ...__________ Ohms Component Status _________________________________ Good Bad This time you should find that the multimeter measures infinite resistance in both conditions This means that there is an open in the contacts The component is bad E Click the Clear Fault button to clear the fault or remove the fault plug and replace it with the standard jumper plug After inserting the standard jumper go t...

Search results

Summary of Contents for 890-FTS1

Reviews:

Related manuals for 890-FTS1

Brands by name

Popular brands

Amatrol 890-FTS1, Manual

Search results

Summary of Contents for 890-FTS1

Reviews:

Related manuals for 890-FTS1

Brands by name

Popular brands