AUBER INSTRUMENTS
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2011.02
P2/8
3.3 Control output connection
The SSR control output of the controller SYL-2352 provides a 12V DC signal
that can control up to 5 SSRs in parallel. The relay output of the controller
SYL-2342 can be used to turn on a contactor or a solenoid valve. It can drive
a small heater directly if the heater draws less than 10 Ampere when
connected to 120V AC power source. For applications needing two control
outputs, such as one for heating and another for cooling, relays AL1 or AL2
can be used for the second output with on/off control mode. Please see
Figure 11 for details.
3.3.1 Connecting the load through SSR (for SYL-2352)
Connect terminal 7 to the positive input and terminal 8 to the negative input of
the SSR. See Figure 8 and 9 for details.
3.3.2 Connecting the load through a contactor (for SYL-2342)
Assuming the controller is powered by 120V AC and the contactor has a 120V
AC coil, jump a wire between terminals 8 and 9. Connect terminal 7 to one
lead of the coil and terminal 10 to the other lead of the coil. Please see Figure
7 for example.
3.3.3. Connecting the heater (or cooler) directly from the internal relay
Assuming the controller and the load (heater or cooler) are powered by the
same voltage. Jump a wire from terminal 9 to 8. Connect terminal 7 to the one
lead of the load and terminal 10 to the other lead of the load. Please see
Figure 6 and 11 for details.
3.4 For first time users without prior experience with PID controllers, the
following notes may prevent you from making common mistakes.
3.4.1 Power to the heater does not flow through terminal 9 and 10 of the
controller. The controller consumes less than 2 watts of power. It only
provides a control signal to the relay. Therefore, wires in the 18 to 26 gauge
range should be used for providing power to terminals 9 and 10. Thicker wires
may be more difficult to install.
3.4.2 The control relay outputs (for SYL-2342), -AL1 and AL2, are “dry” single
pole switches. They do not provide power by themselves. Please see Figure
6, 7 and 11 for how they are wired when providing a 120V output (or when
output voltage is the same as the power source for the controller). If the load
of the relay requires a different voltage than that for the controller, another
power source will be needed. See Figure 10 for examples.
3.4.3 SSR output power does not come from the input of the SSR. The output
of the SSR is a single pole switch between terminals 1 and 2 of the SSR. The
input of the SSR is for control, or triggering the SSR. (Please note we are
talking about the SSR itself, not the SSR control output of the controller).
When switching a North American 240V AC power, the heater will be live
even when the SSR is off. Users should install a double pole mechanical
switch to the power input.
3.4.4. For all controller models listed in this manual, the power is controlled by
regulating the duration of on time for a fixed period of time. It is not controlled
by regulating amplitude of the voltage or current. This is often referred as time
proportional control. e.g. If the cycle rate is set for 100 seconds, a 60% output
means controller will switch on the power for 60 seconds and off for 40
seconds (60/100=60%). Almost all high power control systems use time
proportional control because amplitude proportional control is too expensive
and inefficient.
4. Front Panel and Operation
①
PV display: Indicates the sensor read out, or process value (PV).
②
SV display: Indicates the set value (SV) or output value (%).
③
AL1 indicator: It lights up when AL1 relay is on.
④
AL2 indicator: It lights up when AL2 relay is on.
⑤
A-M indicator: The light indicates that the controller is in manual mode. For
the controllers with the Ramp/Soak option, this light indicates that the
program is running.
⑥
Output indicator: It is synchronized with control output (terminal 7 and 8),
and the power to the load. When it is on, the heater (or cooler) is
powered.
⑦
SET key: When it is pressed momentarily, the controller will switch the
lower (SV) display between set value and percentage of output. When
pressed and held for two seconds will put the controller into parameter
setting mode.
⑧
Automatic/Manual function key (A/M) /Data shift key
⑨
Decrement key
▼
: Decreases numeric value of the setting value.
⑩
Increment key
▲
: Increases numeric value of the setting value.
4.1 Display Status
Figure 2. Front panel
Display mode 1
: When the power is turned on, the upper display window
shows the measured value (PV) and the lower window shows the four-digit set
value (SV).
Display mode 2
: Press the SET key to change the display status into mode
2. The upper display window shows the measured value (PV) and the lower
windows shows the output value. This picture shows the output percentage is
60% when in Automatic (PID) control mode. If parameter A-M=1 (see table 2),
pressing the A/M key will switch the controller between PID and Manual
control mode with the output unchanged. -This bumpless transfer allows the
controller to be switched between manual and automatic mode without the
output suddenly 'bumping' to a different value.
Display mode 3
: Press the SET key for 2 seconds to enter the display mode
3. This mode allows users to change the system parameters.
4.2 Basic Operation
4.2.1 Changing set value (SV)
Press the
▼
or
▲
key once, and then release it. The decimal point on the
lower right corner will start to flash. Press the
▼
or
▲
key to change SV until
the desired value is displayed. If the change of SV is large, press the A/M key
to move the flashing decimal point to the desired digit that needs to be
changed. Then press the
▼
or
▲
key to start changing SV from that digit.
The decimal point will stop flashing after no key is pressed for 3 seconds. The
changed SV will be automatically registered without pressing the SET key.
Figure 3. Display modes
3
4
5
6
1
2
7
8
9
10
8888
8888
Power on
8 0 0
.
0
8 0 0
.
5
Display mode 1
8 0 0
.
0
A 6 0
8 0 0
.
0
“M 60” means
output value=60%
on manual mode
Display mode 2
1 0 0 5
ALM1 (high limit alarm)=1005
Display mode 3
2S
+
Next parameter
M 6 0
A L M1
SET
SET
SET
A/M
SET
A/M
“A 60” means
output value=60%
on Automatic mode
PV
SV
PV
PV
