JVL MAC050 User Manual page 83

2.16
2.16.2 How to connect and use the STO function.
The STO connector contains the 2 enable inputs STOA and STOB. Both inputs must be
applied nominal +24VDC in order to energize the motor and make any motor move-
ment possible.
If only one of the inputs is not applied +24VDC the internal STO circuit will remove the
energy from the motor.
The illustration below shows the pin-out of the connector.
2.16.3 Disabling the STO function.
If the STO function is not needed the plug JVL type WI1010-M08M3SSTO must be in-
serted in the STO connector.
The need of this external plug to disable the STO function is to obtain a high safety level
and make sure that no misunderstandings will occur concerning whether the STO func-
tion is active or not.
2.16.4 STO cabling.
JVL offers a standard 5m long cable with 3 pin M8 connector in one end and flying leads
in the other end.
The part no. is WI1010-M08M3T05P.
2.16.5 Behaviour of the motor operation if STO is activated
When one or both of the STO signals are removed it will forces the motor in passive
mode and an STO error will be shown.
Also the bus voltage readout will show a bus voltage of exactly 100VDC which indicates
that the STO has been activated.
JVL A/S - User Manual - Integrated Servo Motors MAC050 - 4500
Safe Torque Off (STO)
STOA input
Disable output
(do not connect)
Pin 1
Pin 4
TT1271-01GB
Only MAC400/402,1500-4500
Pin 3
STOB input
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