3 24 Heater Current Monitoring
3 24 Heater Current Monitoring
3 25 Reload Default Values
3 25 Reload Default Values
A current transformer, CT94-1, needs to be installed to measure the heater
current. Select CT for IN2. The input 2 signal conditioner measures the heater
current during the heater operation and the current value will remain
unchanged when the heater is unpowered. The PV2 will indicate the heater
current. About how to read PV2 value, please refer to section 3-23.
A current transformer, CT94-1, needs to be installed to measure the heater
current. Select CT for IN2. The input 2 signal conditioner measures the heater
current during the heater operation and the current value will remain
unchanged when the heater is unpowered. The PV2 will indicate the heater
current. About how to read PV2 value, please refer to section 3-23.
NOTES
If the heater to be measured is controlled by output 1, then CYC1 should
select 1 second or longer and O1TY should use RELY, SSRD or SSR . Similarly,
if the heater to be measured is controlled by output 2, then CYC2 should
select 1 second or longer and O2TY should use RELY, SSRD or SSR to
provide an adequate time for the A to D converter to measure the signal.
Since the CT94-1 can detect a full-wave AC current only, a DC or half-wave AC
can't be measured.
If the heater to be measured is controlled by output 1, then CYC1 should
select 1 second or longer and O1TY should use RELY, SSRD or SSR . Similarly,
if the heater to be measured is controlled by output 2, then CYC2 should
select 1 second or longer and O2TY should use RELY, SSRD or SSR to
provide an adequate time for the A to D converter to measure the signal.
Since the CT94-1 can detect a full-wave AC current only, a DC or half-wave AC
can't be measured.
Accessory Installed:
CT94-1
Accessory Installed:
CT94-1
Setup
IN2=CT
O1TY or O2TY=RELY, SSRD or SSR
CYC1 or CYC2 >1 sec
Setup
IN2=CT
O1TY or O2TY=RELY, SSRD or SSR
CYC1 or CYC2 >1 sec
Limitations
1. Linear output type can't be used.
2. CYC1 ( or CYC2 ) should select 1
second or longer to detect heater
current reliably.
3. Only full-wave AC current can be
detected.
Limitations
1. Linear output type can't be used.
2. CYC1 ( or CYC2 ) should select 1
second or longer to detect heater
current reliably.
3. Only full-wave AC current can be
detected.
The default values listed in Table 1.4 are stored in the memory as the product
leaves the factory. If desired, it is always possible to restore these values after
the parameter values have been changed. Here is a convenient tool used to
reload the default values.
The default values listed in Table 1.4 are stored in the memory as the product
leaves the factory. If desired, it is always possible to restore these values after
the parameter values have been changed. Here is a convenient tool used to
reload the default values.
Operation
Press
several times until
. Then press
. The upper
display will show
. Use the up-down keys 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
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 the up-down keys 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
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 it is required.
The procedures mentioned above will change the previous setup data. Before
doing so, make sure that it is required.
FILE 0
°C Default File
FILE 0
°C Default File
FILE 1
° Default File
FILE 1
° Default File
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