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selected, it must be checked whether both the start/restart interlock and the contactor monitoring are active
in the application.
Table 4.2:
Operating mode 1
Operating mode 2
Operating mode 3
Operating mode 4
Step 3: Check alignment of muting sensors and protective sensor
Before the supply voltage is applied for the first time, it should be checked whether the muting sensors and
the protective sensor are aligned in accordance with the product-specific operating instructions and not
concealed by other objects.
Step 4: Apply supply voltage
Switch on the supply voltage of the MSI 420.TMC-03 and wait until the control has performed the self test
(approx. 5 seconds). The following indicators now light up on the front of the MSI 400:
PWR/EC LED: green
The voltage supply is between 16.8 V and 30 V.
MS LED: green
The control is started.
CV LED: orange
The project on the control has been verified. The control will start automatically.
If the device is not in this state, table 5.1 „Diagnostics messages" in this document or the operating instruc-
tions supplied with MSI 420 (chapter 3.2 "Interfaces and display elements") can be used for the purpose
of error diagnosis.
Step 5: Make ready for operation
The start/activation input (I2) functions in two ways in the operating modes with/without start/restart inter-
lock:
• In the operating mode with start/restart interlock, the MSI 420.TMC-03 expects two signal changes
as the switch-on signal (sensor function). A fault in the start button, e.g. caused by welded contacts,
is reliably detected by the MSI 420.TMC-03.
• In the operating mode without start/restart interlock, the input functions as an activation input and
must be supplied with power via the 24 V voltage supply. As soon as a HIGH active signal is present
at I2 and the protective field is free, the safety outputs are closed.
Step 7: Check operation of MSI 420.TMC-03
After successful commissioning, operation of the device can be fully tested. To do this, proceed as follows:
• Interrupt the protective sensor; the safety outputs Q1/Q2 must change their status display. From
green (active) to red (inactive). The downstream contactors are switched off and the dangerous
movement is stopped.
• Align the muting sensors (inputs I4/I5 must be green/active)
• Connect the two control inputs (I6/I7 must be green/active)
• Allow the transport material to pass through the protective sensors as described in chapter 3.3.
Leuze electronic
Selection of operating mode
MSI 420.TMC-03
Start/restart interlock active, con-
tactor monitoring inactive
Start/restart interlock inactive,
contactor monitoring inactive
Start/restart interlock active, con-
tactor monitoring active
Start/restart interlock inactive,
contactor monitoring active
MSI 420.TMC-03
Selection
I10 (n.c), I11 (n.c), I12 (n.c)
I10 ->24V
I11 ->24V
I12 ->24V
12
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