SIEMENS
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Siemens IC 10 · 2017
Load Feeders and Motor Starters for Use in the Control Cabinet
SIRIUS 3RA6 Compact Starters
General data
8
Overload tripping times
The tripping time in the event of overload can be set on the
device to normal starting conditions (CLASS 10) and to heavy
starting conditions (CLASS 20). As the breaker mechanism still
remains closed after an overload, resetting is possible by either
local manual reset or auto reset after three minutes cooling time.
With auto reset, there is no need to open the control cabinet.
Diagnostics options
The compact starter provides the following diagnostics options:
•
With LEDs
- Connection to the control voltage
- Position of the main contacts
•
With mechanical display
- Tripping due to overload
- Tripping due to short circuit
- Tripping due to malfunction (end of service life reached
because of worn switching contacts or a worn switching
mechanism or faults in the control electronics)
These states can also be evaluated in the higher-level control
system:
•
With parallel wiring using the integrated auxiliary and
signaling switches of the compact starter
•
With AS-Interface or IO-Link in even greater detail using the
respective communication interface
Four complement versions for 3RA61 and 3RA62 compact
starters
•
For standard mounting rail or screw fixing:
Basic version including 1 pair of main circuit terminals and
1 pair of control circuit terminals
•
For standard mounting rail or screw fixing when using the
AS-i add-on module:
without control circuit terminals because the AS-i add-on
module is plugged on instead
•
For use with the infeed system for 3RA6:
Without main circuit terminals because they are supplied with
the infeed system and the expansion modules
•
For use with the infeed system for 3RA6 and
AS-i add-on module: Without terminal complement
(also for reordering when replacing the compact starter)
The control circuit terminals are always required by the compact
starters for IO-Link; the main circuit terminals depend on the use
of the infeed system.
More components of the 3RA6
Apart from the control supply voltage, "Overload" (1 CO) and
"Short circuit / Function fault" (1 NO) signaling contacts are
already integrated into the 3RA61/3RA62 – and lockable via
two 6-pole removable control circuit terminals. The 3RA61 has
two auxiliary contacts (1 NO + 1 NC) for displaying the position
of the main contacts. Unlike the 3RA61 direct-on-line starter, the
3RA62 reversing starter has one auxiliary contact (1 NO) per
direction of rotation per main contact.
Available for the 3RA61 and 3RA64 direct-on-line starters is a
slot for an optional auxiliary switch block (optionally 2 NO, 2 NC
or 1 NO + 1 NC) and for the 3RA62 and 3RA65 reversing
starters there are two slots (for auxiliary switch blocks,
see "Accessories" on page 8/72
).
Positively-driven operation of the auxiliary contacts
Positively-driven operation between individual auxiliary circuits
exists for the compact starter in the version as a direct-on-line
starter for parallel wiring (3RA61) between the auxiliary circuits
of the NC contacts (NC 21-22) and the NO contacts (NO 13-14)
in the basic unit.
In addition, the optional auxiliary switch block offers positively
driven contacts in the 3RA6913-1A version, each with one
normally closed contact and one normally open contact.
© Siemens AG 2016