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Kollmorgen
8.15.3.1
Connectors X3A, X3B
Ready-to-operate contact BTB/RTO (X3B/14,15)
Operational readiness (terminals X3B/14 and X3B/15 ) is signaled by a floating relay
contact. The contact is closed when the servo amplifier is ready for operation, and the
signal is not influenced by the enable signal, the I²t-limit, or the brake threshold.
All faults cause the BTB/RTO contact to open and the output stage to be switched off (if
the BTB/RTO contact is open, the output stage is inhibited -> no power output). A list of
the error messages can be found on page 120.
Programmable digital outputs DIGITAL-OUT 1 / 2 (X3A/6,7):
Pins 6 and 7 on X3A can be used as either inputs or outputs. Choose the function you
require in the setup software. The outputs are floating outputs, so the 24 V switching volt-
age must be provided by an external supply via X3A/8.
If they are programmed as digital outputs, messages from pre-programmed functions
stored in the servo amplifier can be output here.
A list of these pre-programmed functions can be found on the "I/O digital" screen page of
our setup software.
If an output is to be freshly assigned to a pre-programmed function, then the parameter
set must be saved in the EEPROM of the servo amplifier and a reset has to be carried out
(with the amplifier setup software for example).
8.15.3.2
Connector X4
Status messages STO1-Status (X4/8) and STO2-Status (X4/6):
Pin 6 and 8 on X4 report the status of the STO-Enable inputs. The outputs are floating
outputs, so the 24 V switching voltage must be provided by an external supply via X3A/8.
S748-S772 Instructions Manual
11/2018
Electrical installation
99
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