3 14 Reload Default Values
3 14 Reload Default Values
The default values listed in Table 1.4 are stored in the memory as the
product leaves the factory. In certain occasions it is desirable to retain
these values after the parameter values have been changed. Here is a
convenient tool to reload the default values.
The default values listed in Table 1.4 are stored in the memory as the
product leaves the factory. In certain occasions it is desirable to retain
these values after the parameter values have been changed. Here is a
convenient tool to reload the default values.
Operation
Press
several times until
. Then press
. The upper
display will show
.Use up-down key to select 0 to 1. If C unit is
required, select 0 for FILE and if F unit is required, select 1 for FILE. Then Press
f
for at least 3 seconds. The display will flash a moment and the default
values are reloaded.
Press
several times until
. Then press
. The upper
display will show
.Use up-down key to select 0 to 1. If C unit is
required, select 0 for FILE and if F unit is required, select 1 for FILE. Then Press
f
for at least 3 seconds. The display will flash a moment and the default
values are reloaded.
CAUTION
The procedures mentioned above will change the previous setup data.
Before doing so, make sure that if it is really required.
The procedures mentioned above will change the previous setup data.
Before doing so, make sure that if it is really required.
FILE 0
C Default File
FILE 0
C Default File
FILE 1
F Default File
FILE 1
F Default File
3 13 Heater Break Alarm
3 13 Heater Break Alarm
A current transformer ( parts No.
) should be installed to detect the
heater current if a heater break alarm is required. The CT signal is sent to
input 2, and the PV2 will indicate the heater current in 0.1 Amp. resolution.
The range of current transformer is 0 to 50.0 Amp.
CT94-1
A current transformer ( parts No.
) should be installed to detect the
heater current if a heater break alarm is required. The CT signal is sent to
input 2, and the PV2 will indicate the heater current in 0.1 Amp. resolution.
The range of current transformer is 0 to 50.0 Amp.
CT94-1
Example:
A furnace uses two 2KW heaters connected in parallel to warm up the process.
The line voltage is 220V and the rating current for each heater is 9.09A. If we
want to detect any one heater break, set A1SP=13.0A, A1HY=0.1
A1FN=PV2.L, A1MD=NORM, then
Example:
A furnace uses two 2KW heaters connected in parallel to warm up the process.
The line voltage is 220V and the rating current for each heater is 9.09A. If we
want to detect any one heater break, set A1SP=13.0A, A1HY=0.1
A1FN=PV2.L, A1MD=NORM, then
Heater Break Alarm 1
Setup : IN2 = CT
A1FN = PV2.L
A1MD = NORM
A1HY = 0.1
Adjust : A1SP
Trigger levels : A1SP A1/2 A1HY
Heater Break Alarm 1
Setup : IN2 = CT
A1FN = PV2.L
A1MD = NORM
A1HY = 0.1
Adjust : A1SP
Trigger levels : A1SP A1/2 A1HY
Limitations :
1. Linear output can't use heater break
alarm.
2. CYC1 should use 1 second or
longer to detect heater current reliably.
Limitations :
1. Linear output can't use heater break
alarm.
2. CYC1 should use 1 second or
longer to detect heater current reliably.
0
10
20
30
40
50
A
0
10
20
30
40
50
A
0
10
20
30
40
50
A
No heater breaks
No heater breaks
1 heater breaks
1 heater breaks
2 heaters breaks
2 heaters breaks
Alarm !
Alarm !
Alarm !
Alarm !
Figure 3.9
Heater Break Alarm
Figure 3.9
Heater Break Alarm
Heater Break Alarm 2
Setup : IN2 = CT
A2FN = PV2.L
A2MD = NORM
A2HY = 0.1
Adjust : A2SP
Trigger levels : A2SP A1/2 A2HY
Heater Break Alarm 2
Setup : IN2 = CT
A2FN = PV2.L
A2MD = NORM
A2HY = 0.1
Adjust : A2SP
Trigger levels : A2SP A1/2 A2HY
37
UM9300 2.0
UM9300 2.0
