i
USER’S OPERATING MANUAL FOR PID DIGITAL TEMPERATURE CONTROLLER
(Models: Px 428 / 728 )
SPECIFICATIONS : -
1
SAFETY INSTRUCTION :
installing or commissioning of controller. All safety
GENERAL
the controller must not exceed the maximum specified
operation. Incorrect configuration could result in
related instruction appearing in this manual must be
applications. It is important to read the manual prior to
or it may lead personnel injury.
to the user after installation.
v
The Controller in its installed state must not come in
v
The Controller in its installed state should not be
exposed to carbon dust, salt air, direct sunlight or
v
Ambient temperature and relative humidity surrounding
ELECTRICAL
v
Circuit breaker or mains s/w with fuse (275V/1A) must
close proximity to any corrosive/combustible gases,
followed to ensure safety of the operating personnel as
v
The controller must be configured correctly for intended
v
The controller is generally part of control panel and in
well as the instrument.
such a case the terminals should not remain accessible
This controller is meant for temperature control
MECHANICAL
products.
v
The controller in its installed state must be protected
interferences. Ventilation holes provided on the chassis
must comply with local electrical regulation.
v
Care must be taken not to connect AC supplies to low
caustic vapours, oils, steam or any other process by-
radiant heat.
of the instrument are meant for thermal dissipation
voltage sensor input.
v
To minimize pickup of electrical noise, the wiring for low
damage to the equipment or the process under control
limit for proper operation of the controller.
to protect the controller from any possible damage due
driving high voltage loads to protect the controller from
this, use shielded ground at both ends.
against excessive electrostatic or electromagnetic
hence should not be obstructed in the panel.
v
The controller should not be wired to a 3-Phase supply
such supply could rise above 264 VAC which will damage
any possible damage due to short circuit on loads.
v
Circuit breaker and appropriate fuses must be used for
v
The controller must be wired as per wiring diagram & it
to high voltage surges of extended duration.
high current power cables. Where it is impractical to do
the controller.
be installed between power supply and supply terminals
v
The Electrical noise generated by switching inductive
loads might create momentary Fluctuation in display,
alarm latch up, data loss or permanent damage to the
with unearthed star connection. Under fault condition
voltage DC and sensor input must be routed away from
being controlled.
spoiling the product, this could damage the process
to avoid any failure of heating system. Apart from
instrument. To reduce this use snubber circuit across
the load.
v
It is essential to install a over Temp. Protection device
2
: Alarm Status
S
: Soak Timer
T : Tuning Status (Only Px-X28)
Range
: Refer below table.
2. INPUT
CJC for TC
: Built in automatic
1. DISPLAY TYPE
: Dual
4- Digit
7 Segment LED
4 Digit Bright White (PV)
4 Digit Luminous Green (SV)
STATUS LED’S
: 1 : Main Control Output
Sensor input : TC:J,K,R,S,N,T,B, RTD: Pt-100 &
Pt-100(RTD 0.1)
Sampling Time : 125 msec.
Resolution
: 1°C/0.1°C(Only for RTD)
LWC for Pt-100
: Built in upto 18E max.
3. RELAY OUTPUT
Digital Filter : 1 to 10 Sec.
Contact type
: N/O, CM, N/C
Contact Rating
: 5A @ 250VAC or 30 VDC
Life expectancy
: > 5,00,000 operations
Isolation
: Inherent
Compliance : ----
3) Soak timer
Isolation
: Non-Isolated.
1) Auxiliary control
5. FUNCTION
6. ENVIRONMENTAL
Output 1
: Main Control output
2) Alarm
Storage Humidity
: 95% Rh (Non-condensing)
Consumption
: 4W Maximum.
8. PHYSICAL
7. POWER SUPPLY
Control Action : ON-OFF/PID (Select)
Housing
: ABS Plastic
Drive Capacity
: 12V @ 30mA.
Output 2
: Programmable
4) Alarm + Soak timer
Control Mode : Heat, Cool, Heat/Cool (Select)
4. SSR DRIVE OUTPUT
Operating Range
: 0 ~50°C, 5~90% Rh
Supply Voltage
: 90~270VAC, 50/60Hz.
Model no.
Display height (PV)
Display height (SV)
Px-428
0.36”
0.70”
0.24”
0.50”
Px-728
Fe-k(J) T/C
Cr-AL(K) T/C
Sensor Type
Accuracy
o
± 1 C
o
0 ~ 1700 C
o
0 ~ 1700 C
o
0 ~ 1800 C
o
-100 ~ 450 C
Resolution
Range
o
1 C
o
1 C
o
1 C
}
(R) T/C
(S) T/C
TC - N
TC - T
TC - B
Pt-100(RTD)
Pt-100(RTD 0.1)
o
0
~
760 C
o
-99
~
1300 C
o
-99
~
1300 C
o
-99
~
400 C
o
-99.9 ~ 450.0 C
o
1 C
o
1 C
o
1 C
o
1 C
o
1 C
o
0.1 C
o
± 0.3 C
OIM Px-X28 V2.0 Page 1 of 9
(72x72)
Px-728
(48x48)
Px-428
