i
SET
START
RESET
AT
-therm
i
Px-728
T
T
S
1
2
PV
SV
i
-therm
Px-428
AT
START
RESET
SET
T
S
1
2
2
MECHANICAL INSTALLATION
The label on the controller identifies the serial number, wiring connections and batch number.
CAUTION:
To prevent the risk of electrical shock, switch off the power before making/removing any connection or removing
the controller from its enclosure.
ELECTRICAL INSTALLATION
The electrical connection diagram is shown on the controller enclosure as below.
Px-428
Px- 728
OVER ALL DIMENSIONS & PANEL CUT OUT (IN MM)
INSTALLATION GUIDELINES :
3. Push the controller through panel cut-out and secure the
controller in its place by tightening the side clamp.
2. Remove clamp from controller
1. Prepare the cut-out with proper dimension as shown in figure.
MODEL:Px428/728/928
A
E
F
PANEL
CUTOUT
FRONT PANEL LAYOUT
FRONT PANEL LAYOUT DESCRIPTION :
Glows when OP1 is ON & flashes when delay time (dly1) is in operation (if selected mode is ON-OFF)
Glows when OP2 is ON & flashes when alarm condition persists even after acknowledged OR delay time (dly2) is in operation &
selected mode is ON-OFF.
Glows when Soak mode is selected & flashes when soak timer is in operation.
(1) For SP programming. (2) To access Control mode. (3) To access Configuration mode along with UP key. (4) To scroll the
parameter & to store its value.
(1) To increase/alter parameter value in program mode. (2) To enter in configuration mode (with SET key). (3) To acknowledge Alarm.
(4) To enter in tune mode (with DOWN key).
(1) To decrease/alter parameter value in program mode. (2) To enter in tune mode (with UP key).
It will display (1) Measured value of selected input or Error messages in run mode. (2) Parameters value in program mode.
It will display (1) SP (Main set point) / SP2 (Auxiliary/Alarm) set value / Set Soak time value/ balance or elapsed soak time in run
mode. (2) Parameter code in program mode.
1
2
3
4
5
6
7
Sr.
NAME
FUNCTION
(1) To increase/alter parameter value in program mode with Up / Dn key.
(2) Press for 3sec in programming, this will help to go back to previous parameter.
OP1 LED
OP2 LED
SOAK LED
UPPER
DISPLAY
LOWER
DISPLAY
SET
KEY
SHIFT
KEY
UP
KEY
DOWN
KEY
OIM Px-X28 V2.0 Page 1 of 9
Px- 728
50
3
70
45
45
45
TABLE : 1
Model
Dim
A
B
C
D
F
G
E
Px- 428
Model no.
Weight (gms.)
Px-428 Px-728
50
72
72
3
60
68
68
68
130
200
Px-428
Px-728
4
5
7
1
2
3
6
4
5
7
1
2
3
6
OP2
NO
NC
CM
1
6
10
3
2
4
5
8
NO
NC
CM
OP1-RLY
9
7
OP1-SSR
12
13
11
15
14
16
Digital I/P
R
W
W
i
OP2-RLY
NO
NC
CM
OP1-RLY
NO
NC
CM
w
w
R
1
2
3
4
5
6
7
14
13
12
11
10
9
8
15
18
20
19
16
17
Digital I/P
OP2-SSR OP1-SSR
i
PV
SV
