22
CAUTION
Notice:
The information in this document is
subject
to
change in order to improve reliability , design or function
without prior notice and does not represent
a commitment on
the part of the company. In no
event will the company be
liable for direct, indirect, special, incidental or consequential
damage arising out of the use or inability to use the product
or documentation, even if advised of the possibility of such
damages. No part of this manual may be reproduced or
transmitted in any form or by any means without the prior
written permission of the company.
WIRING:
The probe and its corresponding wires should
never be
installed in a conduit next to control or power
supply lines. The
electrical wiring should be done as shown in the diagram. The
power supply circuit should be connected to a protection switch.
The terminals admit wires of upto 2.5sq mm.
WARNING:
Improper wiring may cause irreparable damage and
personal injury. Kindly ensure that wiring
is done by qualified
personnel only.
Maintenance:
Cleaning: Clean the surface of the controller with
a soft moist cloth. Do not use abrasive detergents, petrol, alcohol
or solvents.
19
Display
:
3
X14.2 mm (0.56") LED
Housing
:
White, ABS Plastic
Front Cover
:
Red Polycarbonate plastic.
Light Relay :
5A, 250Vac(res.)
O
O
Resolution :
1 C / 0.1 C.
<
2.5sqmm one wire/terminal only
O
O
O
Range
:
-40 C to 99 C (1 C).
O
Accuracy :
+/- 1 C.
Power input :
230Vac
+/-15%,50-60Hz.
Input
:
NTC probe, SZ-N75.
Compressor Relay :
8
(3)A, 250Vac.
Connections :
Screw terminal blocks.
Other on request.
Dimensions :
Front
:
80 X 126 mm,
Depth
:
15 mm.
O
O
Probe tolerance at 25 C
:
+/- 0.3 C.
Mounting
:
Wall Mount.
Technical data:
Data storage :
Non-volatile EEPROM memory
O
O
Storage temp :
-20 C to 70 C(non-condensing).
Output :
O
O
Operating temp. :
5 C to 50 C(non-condensing).
O
O
O
-40.0 C to 50.0 C (0.1 C).
20
NEUTRAL
To SZ-N75
Compressor
, Contactor
or Heater 8(3)A
max
PHASE
Caution:Wiring for 230Vac load only
10
8
9
11
7
230V
1
NC NO
C
PROBE
6
COMP
5
4
C
NO
NC
3
LIGHT
Light 250V
AC, 5A(res.)
FRONT VIEW
21
17
Operating messages and Icon status
Parameter
Message Description
P2
Ht
Temperature above the maximum
limit of the set point.
P3
Lt
Temperature below the minimum limit
of the set point.
PP
Probe short circuit, circuit open or without
0
0
probe, or temperature > 99 C or <-40 C
0
when RS=1 and temperature >50.0 C or
0
<-40.0 C when RS=0.
SP, P4
Comp. Relay ON/OFF.
On/Off
LP
Keypad locked/unlocked
On/Off
P6
Time delay in progress
Flashing
Light Relay ON/OFF.
On/Off
18
Power Key
Used to switch ON the controller.
Set Key
UP Key
Used in program mode and set mode
to increment parameter value.
Down Key /
Program Key
Used to enter into the program mode.
Key Introduction
Also used as Down key to decrement
parameter value in program mode.
Used in program mode to set/save the
changed value of parameter.
If press UP key once Light Relay & LED
will become ON and If press again once
Light Relay & LED will become OFF.
