SIEMENS
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Siemens IK PI · 2015
IO-Link
SIRIUS 3RR24 monitoring relays for mounting onto 3RT2 contactors for IO-Link
General data
5
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Overview
(continued)
✓
Available
Features
3RR24
Benefits
Features
RESET function
✓
• Allows manual or automatic resetting of the relay
• Resetting directly on the device, by switching the control supply voltage off
and on or via IO-Link (remote RESET)
ON-delay time
0 ... 999.9 s
• Enables motor starting without evaluation of the starting current
• Can be used for monitoring motors with lengthy start-up
Tripping delay time
0 ... 999.9 s
• Permits brief threshold value violations during operation
• Prevents frequent warnings and disconnections with currents near the
threshold values
Operating and indicating ele-
ments
Displays and buttons
• For setting the threshold values and delay times
• For selectable functions
• For quick and selective diagnostics
• Displays for permanent display of measured values
Integrated contacts
1 CO contact,
1 semiconductor
output (in SIO mode)
• Enable disconnection of the system or process when there is an irregularity
• Can be used to output signals
Design of load feeders
Short-circuit strength up to 100 kA at 690 V
(in conjunction with the corresponding fuses or the
corresponding motor starter protector)
✓
• Provides optimum protection of the loads and operating personnel in the event
of short circuits due to insulation faults or faulty switching operations
Electrical and mechanical
matching to 3RT2 contactors
✓
• Simplifies configuration
• Reduces wiring outlay and costs
• Enables stand-alone installation as well as space-saving direct mounting
Spring-type terminals for main circuit
and auxiliary circuits
✓
(optional)
• Enables fast connections
• Permits vibration-resistant connections
• Enables maintenance-free connections
Other features
Suitable for single- and three-phase loads
✓
• Enables the monitoring of single-phase systems through parallel infeed
at the contactor or looping the current through the three phase connections
Wide setting ranges
✓
• Reduce the number of variants
• Minimize the configuration outlay and costs
• Minimize storage overheads, storage costs, tied-up capital
Power supply
24 V DC
• Direct via IO-Link master or via an external auxiliary voltage independent
of the IO-Link
• Minimizes the configuring overhead and costs
© Siemens AG 2014