88
Manual – MOVIDRIVE® MDX60B/61B Communication and Fieldbus Unit Profile
7
Sequence control
SEW Unit Profile
7.4.2
Linking safety-relevant control commands
Basically, the control commands
• CONTROLLER INHIBIT
• RAPID STOP / STOP
• STOP
• HOLD CONTROL
• ENABLE
can be activated simultaneously using the set control signal source, the binary inputs,
and the IPOS
plus®
control program. To link these control functions under safety-relevant
aspects, the individual control commands are prioritized. For enabling the drive inverter,
for example, the following figure shows that all three processing blocks (terminal
processing, control word processing, and IPOS
plus®
program) have to generate the
eneable. As soon as one of the three processing blocks triggers a control command of
higher priority (such as
STOP
or
CONTROLLER INHIBIT
), the higher prioritized
command will become effective.
After switching on the drive inverter, IPOS
plus®
generally issues the control command
ENABLE
so that the drive can be controlled immediately even without the IPOS
plus®
program.
The binary inputs will generally remain active even if the inverter is controlled via the
process data
(P101 control signal source = RS485/FIELDBUS/SBus)
. Safety-relevant
functions, such as controller inhibit and enable are equally processed by the terminal
strip and the fieldbus. This means the drive inverter must have first been enabled at the
terminals to control via fieldbus. All other functions that can be activated via terminals
and the control word, will be processed with an OR function. The following figure shows
the unit status (7-segment display) depending on the various control signal sources
(terminals, bus, or IPOS control word).
65058AEN
OR
"7"
Halteregelung = 0
"4", "5", "6"
XOR
Enable/stop = 0
Bit 1 = 0
BUS:
AND
Terminals:
OR
"2"
Unit status
"F"
"1"
Bit 0 = 1
SBus/RS485/Fieldbus
OR
Terminals:
BUS:
Bit 2 = 0
BUS:
OR
AND
OR
AND
IPOS ctrl. word:
BUS:
AND
CW/stop = 0
CCW/stop = 0
Bit 0 = 1
Bit 3 = 0
Bit 13 = 1
Terminals:
IPOS ctrl. word:
FEHLER
CONTROLLER INHBIIT
STOP
"2"
HOLD CONTROL
HALT
IPOS ctrl. word:
TERMINALS:
IPOS ctrl. word:
TERMINALS:
P101 =
Bit 30 = 1
Ctrl. inhibit = 0
Bit 11 = 1
Ext. fault = 0
SBus/RS485/Fieldbus
P101 =
Stop = 0
SBus/RS485/Feldbus
P101 =
SBus/RS485/Fieldbus
P101 =
Bit 1 = 1
Summary of Contents for MOVIDRIVE MDX60B
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