5.5.5 Prohibited Use
The STO function must not be used in the following cases:
Cleaning, maintenance, repair operations and long inoperative periods:
In such cases, the entire system should be disconnected from the supply by the personnel, and secured
(main switch).
Symbol
Safety Information
CAUTION
Risk of injury from suspended loads! If the STO function is activated, the amplifier cannot hold
the load, the motor no longer supplies torque. Drives with suspended loads must also be
safely blocked using a mechanical means (e.g. with the motor holding brake). If engaged dur-
ing operation, the motor runs down out of control. There is no possibility of braking the drive
controlled. If a controlled braking before the use of STO is necessary, the drive must be braked
and the STO inputs have to be separated from +24 VDC in a time-delayed manner.
Keep to the following functional sequence when STO is used :
1. Stop the drive in a controlled manner (command stop or emergency stop)
2. When speed = 0 rpm, disable the servo amplifier (enable = 0V)
3. If there is a suspended load, block the drive mechanically
4. Activate STO (STO1-Enable and STO2-Enable = 0V
DANGER
The function STO does not provide an electrical separation from the power output. If access to
the motor power terminals is necessary, the servo amplifier must be disconnected from mains
supply considering the discharging time of the intermediate circuit. There is a danger of elec-
trical shock with personal injury.
Table 12: Safety Information STO.
5.6 Commutation Frequency Limitation
The European Union issued export restrictions for frequency converters to some countries. Under some
conditions, export to these countries is simplified. Triamec drives for simplified export contain a limita-
tion of the commutation frequency described in this document. This feature is activated at the factory if
ordered accordingly:
Name
Export
Frequency limitation
Example
TSD-Series without „HS“-Tag
Simplified
yes
TSD80E-E1
TSD-Series with „HS“-Tag
Restricted
no
TSD80E-E1HS
Table 13: Choice of simplified export versus high speed.
A product, ordered without the tag “HS”, contains the frequency limitation feature. This limits the elec-
trical commutation frequency to 600Hz. Moves with speed above this commutation frequency limit will
throw the error „Commutation600HzLimit“ and the axis stops. The commutation frequency is related to
the mechanical speed by the following equations:
5.6.1 Rotational axis
n * p / (60 s/min) =
axes[].signals.commutation.velocity/2
< 600 Hz;
n [1/min]: mechanical speed
p [-]: Pole-Pairs per turn
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