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59
Setting Output Specifications
Section 4-2
Note
(1) This parameter can be set only when operation is stopped.
(2) When the control cycle is short due to the 2-ms output resolution, the Unit
may not operate as set. For example, when the Control Cycle = 1 s and
the Output Minimum ON/OFF Duration = 0.1%, the calculation becomes
1 s (1,000 ms) x 0.1% = 1 ms, but the actual output minimum ON/OFF
duration is 2 ms.
!Caution
If the Output Minimum ON/OFF Duration is too large, control performance
may suffer.
4-2-4
Output ON Scheduling Function
The ON time for each output can be reduced to one half or one fourth of the
control period to limit the number of outputs in the Unit that are ON simulta-
neously.
Note
When the MV is assigned to an output, the actual limit is either this value or
the MV limit value, whichever is lower.
Note
(1) When this parameter has been changed, the new setting becomes effec-
tive the next time a software reset is performed for the Unit or the next
time power is turned ON.
(2) Set the Delay between Outputs parameter to an even number. If an odd
number is set, the next smaller even number will be used.
!Caution
•
Set the Output Mode Selection parameters to Standard Control for all of the
Unit's channels. The Output ON Scheduling function will be disabled if the
parameter is not set to Standard Control.
Variable type
Parameter name
Setting range
Default
E1/A1
Minimum output ON/OFF
width
(IO)
0.0 to 50.0%
1.0
Conditions for use
Control output must be assigned and set to 2-PID control.
These parameters are not valid for outputs 1 and 2 on Control-
lers with linear outputs.
Output ON Scheduling
Method
Number of outputs ON
simultaneously
Each output's limit
(See note.)
No offset
4
100%
1/2
2
50%
1/4
1 (No others ON)
25%
Variable type
Parameter name
Setting range
Default
F0/B0
Output ON Scheduling
Method (Common)
0: No offset
1: 1/2
2: 1/4 (invalid for TC2)
0
Delay between Outputs
(Common)
0 to 1000 ms
(See note 2.)
10
Conditions for use
Control output must be assigned and set to standard control, 2-
PID control. A Controller with pulse outputs must be used.
Summary of Contents for EJ1 EtherCAT
Page 2: ...EJ1 Modular Temperature Controllers User s Manual Revised July 2008 ...
Page 3: ...iv ...
Page 19: ...xx ...
Page 213: ...188 Detailed Description of Services Section 6 4 ...
Page 227: ...202 Detailed Description of Services Section 7 5 ...
Page 303: ...278 Index ...
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