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■ Parameter Initialize
Parameter initialization sets all parameters to default values except
for the input type, scaling upper limit, scaling lower limit, decimal
point, and C/ F selection parameters.
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Alarm
1, 2, or
3 is not
set.
■ Output Assignments
Signals available as allocated outputs are the control output (heat),
control output (cool), alarm 1, alarm 2, alarm 3, LBA, and HBA. The
auxiliary outputs of the Digital Controller cannot be used as control
outputs.
Control output (heat), control output (cool), alarm 1, alarm 2, alarm 3,
LBA, error 1 (input error), error 2 (A/D converter error), and error 3
(RSP input error) output functions are available. These functions are
assigned to control outputs 1 and 2 and auxiliary outputs 1 and 2.
The assignment destination of each output function is may be
restricted. Refer to the following table.
Control output 1
assignment (Not
displayed by the
E5@K-PRR2)
Control output 2
assignment (Not
displayed by the
E5@K-PRR2)
Output
assignment
Auxiliary output 1
assignment
Auxiliary output 2
assignment
Alarm 1 type
Alarm 1
open in
alarm
Alarm 2 type
Alarm type
Alarm 2
open in
alarm
Alarm 3 type
Alarm 3
open in
alarm
Direct/Reverse
operation
Standard Models
Assignment
destination
Output function
Control output (heat)
Control output (cool)
Alarm 1
Alarm 2
Alarm 3
HBA
LBA
Error 1: Input error
Error 2: A/D converter error
Error 3: RSP input error
With control output (cool), the conditions for switching from
standard control to heating and cooling control are reached
when the output function is assigned at the cooling side
during heating and cooling control.
In other words, heating and cooling control is carried out when con-
trol output (cool) is assigned, and standard control is carried out
when output is not assigned.
Position-proportional Models
Assignment
destination
Output function
Alarm 1
Alarm 2
Alarm 3
Error 1: Input error
Error 2: A/D converter error
Error 3: RSP input error
LBA
The LBA (loop break alarm) function is available when it is assigned
as an output. The LBA function is not available when a memory or A/
D converter error results.
LBA is a function for determining that an error has occurred some-
where on the control loop and outputting an alarm when the process
value does not change with the manipulated variable at a maximum
or minimum state. Accordingly, the LBA function can be used as a
means for detecting a malfunctioning control loop.
Digital Controller
Control
Auxiliary
output
output
1
2
1
Yes
Yes
---
---
Yes
Yes
---
---
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
---
---
Yes
Yes
---
---
Yes
Yes
---
---
Yes
Yes
Control
Auxiliary
output
output
1
2
1
---
---
Yes
Yes
---
---
Yes
Yes
---
---
Yes
Yes
---
---
Yes
Yes
---
---
Yes
Yes
---
---
Yes
Yes
E5AK/E5EK
2
2
21
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