5 7 Remote Set Point
5 7 Remote Set Point
An on-line multiple zone oven is used to dry paint. Since heat demand is
various at different positions in the production line, multiple zones with
individual controls should be used to ensure a consistent temperature profile.
If you order an ETR-8300 with a retransmission unit for the master controller,
and retransmit its set point to the input 2 of the rest of slave controllers, each
zone will be synchronized with the same temperature. Here is an example:
An on-line multiple zone oven is used to dry paint. Since heat demand is
various at different positions in the production line, multiple zones with
individual controls should be used to ensure a consistent temperature profile.
If you order an ETR-8300 with a retransmission unit for the master controller,
and retransmit its set point to the input 2 of the rest of slave controllers, each
zone will be synchronized with the same temperature. Here is an example:
To Control
Zone 1 Heater
To Control
Zone 1 Heater
To Control
Zone 2 Heater
To Control
Zone 2 Heater
To Control
Zone 3 Heater
To Control
Zone 3 Heater
To Control
Zone 4 Heater
To Control
Zone 4 Heater
Master
Slave
Slave
Slave
14
13
16
16
16
15
15
15
+
+
+
+
Figure 5.12
Figure 5.12
Remote Set Point
Application
Remote Set Point
Application
Set the following parameters in the setup menu:
Set the following parameters in the setup menu:
Note: AOHI and IN2H should be set with values higher than the set point range used.
Note: AOHI and IN2H should be set with values higher than the set point range used.
For master unit
FUNC= FULL
COMM= 1 5 V
AOLO= 0 C
AOHI = 300 C
PVMD= PV1
SPMD= SP1.2
For master unit
FUNC= FULL
COMM= 1 5 V
AOLO= 0 C
AOHI = 300 C
PVMD= PV1
SPMD= SP1.2
92
OUT1
OUT1
OUT1
OUT1
For slave units
FUNC= FULL
IN2= 1 5 V
IN2L= 0 C
IN2H= 300 C
PVMD= PV1
SPMD= PV2
For slave units
FUNC= FULL
IN2= 1 5 V
IN2L= 0 C
IN2H= 300 C
PVMD= PV1
SPMD= PV2
If a voltage signal (such as the above example) is sent to slave units, the slave
inputs are connected in parallel. If a current signal (e.g. 4-20 mA) is sent to
slave units, the slave inputs should be connected in series. The current
retransmission is used widely since it can transmit to a longer distance without
voltage drop.
If a voltage signal (such as the above example) is sent to slave units, the slave
inputs are connected in parallel. If a current signal (e.g. 4-20 mA) is sent to
slave units, the slave inputs should be connected in series. The current
retransmission is used widely since it can transmit to a longer distance without
voltage drop.
ETR-8300
Out1 Out2
Alm1 Alm2
ETR-8300
Out1 Out2
Alm1 Alm2
ETR-8300
Out1 Out2
Alm1 Alm2
ETR-8300
Out1 Out2
Alm1 Alm2
