SMAR DC302, Owner'S Operation And Maintenance Manual

Page: 38 / 49

DC302
– Operation and Maintenance, Instruction Manual
3.22
Note:
This new position will be detected by C2 and after 5 seconds, the bucket will have
to return to initial position, which will be detected by C4.
After the bucket returns to the initial position, a new weight cycle begins.
Comment:
The operation sequence must be stopped if any requirement is not satisfied.
The silo comort is activated by a hydraulic piston.
Using the Flexible Function Block we have the following definitions:
LSL will be connected to the hardware input 01 (I01);
LSH will be connected to the hardware input 02 (I02);
PSL will be connected to the hardware input 03 (I03);
C2 will be connected to the hardware input 04 (I04);
C4 will be connected to the hardware input 05 (I05);
Power will be connected to the hardware input 06 (I06);
M3 will be connected to the hardware input 07 (I07);
M will be activated by hardware output 01 (O1);
The Comport will be activated by hardware output 02 (O2);
M1 will be activated by hardware output 03 (O3);
We have the following configuration:
TON_PST resource [01] = 5.0s.
LOGIC_01 A01=!I01&I03&I07&I05;
LOGIC_02 A02=I06&RS01(I02,I01);
LOGIC_03 O3=A02&I03;
LOGIC_04 A03=I03&I07;
LOGIC_05 O2=I06&A03&!I04;
LOGIC_06 O1=TON01(I04)&!I05&A03;
3) Using Fault-State values:
Lets suppose we have the following condition:
A01 receives the logic between the status for discrete inputs as follows:
A01=IN1S&IN2S;
when the status is bad for one of these inputs, then, A01=false(0),
otherwise, A01=true (1);
FS1 is the fault-state value for O1;
A02 is the bit containing the logic for O1;
We have the following table between the FS1, A01 and A02:
FS1 A01 A02 O1
0 0 0 0
0 0 1 0
0 1 0 0
0 1 1 1
1 0 0 1
1 0 1 1
1 1 0 0
1 1 1 1
Then,
A03=!FS1&A01&A02;
A04=FS1&!A01&!A02;
A05=FS1&!A01&A02;
A06=FS1&A01&A02;
O1=A03|A04|A05|A06;