SIRIUS 3RT2 contactors/contactor assemblies
2.7 Accessories
SIRIUS Innovations
188 System Manual, 01/2011, A8E56203870002-03
2.7.7 Additional load module
2.7.7.1 Description
The 3RT2916-1GA additional load module for size S00 contactors is used to increase the
permissible residual current and to limit the residual voltage of SIMATIC semiconductor
outputs.
If SIRIUS contactors and SIRIUS contactor relays of size S00 are used in conjunction with
SIMATIC output modules whose residual current on signal "0" is higher than that which is
permissible for size S00 contactors, this can sometimes result in malfunctions. The
maximum permissible residual current of the electronics for size S00 contactors with a
230 V AC drive is 3 mA; at higher residual currents the contactors will not drop out. The
additional load module is used to ensure that size S00 contactors which are directly
controlled via 230 V AC semiconductor outputs are disconnected safely by programmable
logic controllers. The additional load module also performs the function of an overvoltage
attenuation circuit.
Technical data
Rated voltage AC 50/60 Hz
180 V to 255 V
Rated power 1.65 W at 230 V
Permissible contactor types 3RT2.1 (size S00)
2.7.7.2 Mounting
The 3RT2916-1GA additional load module is connected in parallel with the contactor coil. Its
design is identical to that of the surge suppressor and it is attached to the front of the
contactor, with or without an auxiliary switch block.
Reference
More information ... Can be found in the chapter titled ...
About mounting the additional load module Surge suppressor (Page 170)
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