192-011006N8 PSD1 Installation Guide
192-011006N8 2019-07
09.10.19 09:27
73 (109)
6.3
Notes on the STO function
•
It should be noted in connection with the STO application examples illustrated
here that after the Emergency stop switch has been activated, no galvanic
isolation in accordance with EN 60204-1 Section 5.5 is guaranteed. This means
that the entire system must be disconnected from the mains power supply with
an additional main switch or mains power contactor for repair jobs. Please note
in this context, that even after the power is disconnected, dangerous electrical
voltages may still be present in the drive for about 10 minutes.
•
During the active braking phase of Stop category 1 (controlled bringing to a stop
with safely monitored delay time according to EN60204-1) or safe stop 1, faulty
function must be expected. If an error in the drive system occurs during the
active braking phase, the axis may trundle to an unguided stop or might even
actively accelerate until the expiry of the defined switch-off time.
•
As soon as Setup-mode is activated in the PSD ServoManager, the Fieldbus -
Interface is deactivated. Then it is not possible to set a braking ramp via
fieldbus.
Maintenance
•
When using STO a
recorded STO - function test
(see page 78) must be carried
out:
♦
After commissioning and
♦
in defined maintenance intervals.
6.4
Conditions of utilization for the STO function
•
The STO safety function must be tested and protocoled
as described
(see page
78). The safety function must be requested at least once a week. In safety door
applications, the weekly testing interval must not be observed, as you can
assume that the safety doors will be opened several times during the operation of
the machine.
•
The PSD1 with integrated STO safety function as well as the utilized safety
switching devices must be mounted protected (IP54 control cabinet).
•
Basically there is only a maximum cable lenght of 30 m of STO inputs (X17, X21)
alllowed. It's not permitted to route the cables outside.
•
Only qualified staff members are permitted to install the STO function and place it
in service.
•
The X9/2 (GND24V) terminal on the PSD1-M_P mains module respectively the
X17.12 (GND24V) terminal on the PSD1-S single device must be connected to
the PE protective lead. This is the only way to ensure protection against incorrect
operation through earth faults (EN60204-1 Section 9.4.3)!
•
When using an external safety control with adjustable delay time, (as illustrated in
the STO application example), it must be ensured that the delay time cannot be
adjusted by persons not authorized to do so (for example by applying a lead
seal). With the UE410-MU safety control, this is not necessary, if the anti
manipulation measures are respected.
•
The adjustable delay time on the safety control must be set to a value greater
than the duration of the braking ramp controlled by the PSD1 with maximum load
and maximum speed.
Otherwise fault 0x5495 may occur.
•
All conditions necessary for CE-conform operation must be observed.
•
When external forces are applied to the drive axes, additional measures (e.g.
additional brakes) are to be taken. Please note in particular the effects of gravity
on suspended loads! This must be respected above all for vertical axes without
self-locking mechanical devices or weight balance.
•
When using synchronous motors, a short movement over a small angle is
possible, if two errors occur simultaneously in the power section. This depends
on the number of pole pairs of the motor (rotary types: 2 poles = 180°, 4 poles =
90°, 6 poles = 60°, 8 poles = 45 °, Linear motors: 180 ° electric).
