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11. Appendix D: Sample Use under PL7 PRO
11.3. Controlling and Supervising the 8 TeSys U Motor Starters
The “Supervision Control” operating screen (see picture below) is meant to monitor the status of the 8 TeSys U
motor starters, numbered from 1 to 8. It is also meant to control them individually using several buttons.
Registers 455 and 704 of each of the 8 TeSys U motor starters are used to conduct this control and supervision:
455 – TeSys U status register (IEC61915)
Bit 0..........Motor starter ready
Bit 1..........Contactor in the ON position (
1 )
Bit 2..........Fault (
trip or dropout)
Bit 3..........Alarm presence
Bit 4..........Specific:
Tripped ( I >> )
Bit 5..........Specific: Fault reset authorized
Bit 6..........Specific: A1-A2 supply
Bit 7..........Specific: Motor running
Bits 8-13...Motor current (2#10 0000 = 200%)
Bit 14........Reserved: Local control
Bit 15........Ramping (motor starting)
704 – (IEC61915) command register
Bit 0 ..........Reserved: Run forward
Bit 1 ..........Reserved: Run reverse
Bit 2 ..........Reserved (stopping)
Bit 3 ..........Reset
Bit 4 ..........Reserved (emergency start)
Bit 5 ..........Self test: Triggering test (
trip)
Bit 6 ..........Reserved (low speed)
Bits 7-11...Reserved by the IEC61915 standard
Bit 12 ........Specific: Overload (
shunt trip)
Bit 13 ........Specific: Pause (reserved for adjustment)
Bits 14-15.Specific: Reserved
These statuses and controls are grouped in two sections: “General Status”, for the general operating mode of
the motor starters, and "Motor" for the general operating mode of controlled motors. The last section, “DEBUG
COMM.”, displays the registers %IW and %QW used for each motor starter.
This screen is represented below, but only for the first motor starter, as it is identical for the 7 others.
Most displays in this operating screen are directly tied to the %MW
registers containing the values of registers %IW4.0.1 to %IW4.0.8 and
%QW4.0.1 to %QW4.0.8 (status and command registers of the TeSys U
motor starters). Only the indirect controls and statuses are described
below.
The
“Cmd_mon” program conducts the following tasks:
• Copy the values of words %MW20 to %MW27 to output registers
%QW4.0.1 to %QW4.0.8, and copy the values of input registers
%IW4.0.1 to %IW4.0.8 to words %MW10 to %MW17.
These data are copied because word bit extraction can be carried out
on %MW indexed words, but not on %IW indexed words. Actually, the
sub-program
“Sr0” uses word indexing to a large extent, as it makes it
possible to process any motor starter, since it is designated by the word
%MW0.
E.g.: “%MW10[%MW0]:X13” is allowed, but not
“%IW4.0.1[%MW0]:X13”.
Furthermore, the input and output words are copied one by one, as
PL7 PRO does not support expressions such as “%IW4.0.1:8”.
• “Sr0” sub-program calling loop, whose purpose is to control and
monitor of the 8 TeSys U motor starters. Upon each iteration of this
loop, the word %MW0 (“Module”) takes a value from 0 to 7 in order
to be used as an index for words %MW10 to %MW17 (inputs) and
%MW20 to %MW27 (outputs).