Stober PS6A34 - Motor overload protection and temperature protection; Braking resistor specifications; Conductor and Fuse Requirements

4 | UL-compliant use STOBER
20
02/2019 | ID 442728.05
The connection for the protective grounding on the housing is identified by the following
grounding symbol
.
Observe the notes in the chapter UL-compliant housing grounding [
}108] for correct
installation.
2. Functional grounding
In addition to the protective grounding, a functional grounding is required for proper operation of
the PS6 drive system in combination with SI6 and of the motor. The functional grounding of the
PS6 drive system in combination with SI6 is connected using the terminal X10. The functional
grounding of the motor is connected using the terminals X20A and X20B. The connections for
the functional grounding to terminals X10, X20A and X20B are marked with PE. For UL-
compliant operation: The connections marked with PE are intended solely for the functional
grounding.
Terminals
Note that the basic device is delivered without terminals. Suitable terminal sets are available
separately for each size. You can see an overview of the available terminal sets in the chapter
Order overview of the hardware components [
}83].
Motor overload protection/motor temperature protection
Use motor overload protection/motor temperature protection. The SI6 drive controller features
connections for PTC thermistors (NAT 145°C, sensor voltage = 3.3V, sensor current = 0.6A).
The devices are only intended to be used with motors which have integral thermal protection. In
accordance with UL certification, operation without motor overload protection/motor temperature
protection in or on the motor (X2 jumpers) is not permitted! For a proper connection, observe
the terminal description for X2A in the chapter X2A: Motor temperature sensor A [
}118].
Braking resistor
Use braking resistors with thermal monitoring and a resistor with at least 22Ω.
The temperature switch must be connected to terminal X21 of the PS6 supply module. If the
temperature switch reports a braking resistor overload, the PS6 supply module must be
removed from the power supply using the WARNING1 relay at terminal X100. You can find an
associated wiring example in the chapter UL-compliant connection of the supply module [
}241].
Brake
Observe the technical data for the brake in the chapter Controllable brakes [
}64].
Binary inputs
Observe the technical data for the binary inputs at X101 and X103 in the chapter Binary inputs
[}47].
Conductors
Power terminals: Use 60/75°C copper conductors only.
Fuses
Fuses must be approved for DC voltage in accordance with UL 248.