...
Even with all of these components, you can systematically locate nearly any problem with just a multimeter.
Tools
Digital multimeter
Twist
...
Out the Emergency Stop
...
Button
Reason: The Emergency Stop button is pushed in.
Twist out the Emergency Stop button and press the Reset button.
| Info |
|---|
The Reset button doesn't illuminate until after you:
|
Reset the
...
Building’s Mains Breaker
Reason: The shop or building’s mains breaker is turned off.
Examine the building’s breaker. If it's not already on, turn it on.
Using a digital multimeter, measure to inspect and verify that you have power at the outlet.
Inspect the
...
Power Entering the
...
Machine
Reason: The Main Disconnect switch is in the Off position.
Examine the Main Disconnect switch. If it’s not already in the On position, turn it on and try to take your machine out of reset.Identify your machine in the following table and measure
Measure the voltage coming out of your Main Disconnect switch.
Identify the wires as indicated in the table.
If you measure the correct Vac, continue.
If you do not any Vac, you either have a loose wire or a faulty Main Disconnect switch.
Machine | Wires | Measure for… |
|---|---|---|
770M/MX | 101 and 100/N | 115 Vac nominal |
...
Reset the CB1 and/or CB2
...
Circuit Breaker
Reason: The CB1 and/or CB2 circuit breaker tripped.
...
Machine | Wires (CB1 and CB2) | Measure for… |
|---|---|---|
770M/MX | 105 and 100/N and 107 and 100/N | 115 Vac nominal |
...
Inspect the DC
...
Power Supply (PS1)
Reason: The DC power supply PS1 is defective.
...
Machine | Wires | Measure for… |
|---|---|---|
770M/MX | 112/N and 113 | 115 Vac nominal |
...
Inspect the K1
...
Contactor
Reason: The contactor K1 is defective.
Examine the K1 contactor’s red LED light. Depending on the state, do one of the following:
Red LED is On. This indicates that the contactor is latched. Use a digital multimeter to examine the power at K1-1 and wire 115.
Red LED is Off. Press and hold the Reset button and observe the LED on K1:
If it's on, K1 has a latching circuit issue.
If it's not on, K1 may have a coil issue.
...