User`s manual
T200 User's Manual SECTION 3: WIRING AND INSTALLATION
PAGE 3-78
3.15.6 Power Sequencing on Startup
The timing of the digital inputs ENABLE and PWR_RDY must be considered carefully for proper power-on
sequencing.
Figure 3.46: Power Sequencing control using PWR_RDY and ENABLE
Logic Power applied
24Vd.c. or 120Va.c.
A.C. Mains applied to
T200-X10
PWR_RDY of T200-
X10
PWR_RDY input of a
connected T200-X00
ENABLE input of
T200-X10
DRV_ENBLD of T200-
X10
SYS_RDY output of
T200
Minimum Time from logic power
to SYS_RDY 15seconds
A.C. Mains to
PWR_RDY < 2s
SYS_RDY activated to
ENABLE transition can
be < 6ms
Delay from ENABLE to
DRV_ENBLD
acknowledge < 6ms
Delay from PWR_RDY to
SYS_RDY acknowledge
< 6ms
NOTE
:- The T200 needs an inactive to active transition on the ENABLE input
before it will apply high power to the power amplifier and motor. If a fault is
present, and such a transition occurs, the T200 will not enable. A subsequent
inactive to active transition MUST occur once the fault has been removed, before
the T200 will allow itself to apply high power to the power amplifier and motor.
WARNING - It is UNSAFE to use the SYS_RDY output as a direct control for
the ENABLE. The SYS_RDY output will switch off when a software
configuration is carried out, and will switch on when the software configuration is
complete. This may result in an inadvertent enable of high power to the T200
high power amplifier, resulting in unexpected high voltage application or motion.
The System Motion Controller should examine the state of the SYS_RDY output
separately, and then enable the T200 high power amplifier if appropriate