Sub-Zero SZ-7505T Operating Instructions

SZ-7505T
Operating Instructions
Touch Sensitive Temperature Indicator
Introduction :
The new SZ-7505T is the next generation of Subzero indicators. Their
IP ratings are greatly improved and have an excellent iconic display.
The touch feature whilst increasing reliability also gives a great user
experience.
Their operation is very user friendly and is easily understood with the
examples in the instructions below.
The SZ-7505T can be used as a indicator with a temperature range
O O
from -45 C to 99 C. Calibration via keypad is possible.
CAUTION
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 indicator with a
soft moist cloth. Do not use abrasive detergents, petrol, alcohol or
solvents.
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.
Installation : Fixing and dimensions of panel models:
To fix the unit, slide the fastener 1 through the guides 2 as per the
position shown in the figure. Move the fastener in the direction of the
arrow, pressing tab 3 it permits to move the fastener in the opposite
direction of the arrow.
Indicator : Indicator should be installed in a place protected by
vibration, water and corrosive gasses and where ambient
temperature does not exceed the values specified in the technical
data.
Probe :To give a correct reading, the probe must be installed in a
place protected from thermal influences, which may affect the
temperature to be controlled.
TM Panel Cutout and Dimensions :
2
1
29mm
59 mm
PANEL
GASKET
Indicator
Suggested Wiring SZ-7505T (230Vac)
230VAC
50-60Hz
PROBE
1 2 3 5
TO SZ-T75
PHASE
NEUTRAL
Caution:Wiring for 230Vac load only
Suggested Wiring SZ-7505T (12Vac/dc)
12V
PROBE ac/dc
1 2 3 5
TO SZ-T75
Suggested Wiring SZ-7505T (24V
24V
ac/dc
PROBE
1 2 3 5
TO SZ-T75
Suggested Wiring SZ-7505T (48VDC)
MAX
10mm
3
PROBE 48VDC
1 2 3
36mm
TO SZ-T75
Suggested Wiring SZ-7505T (110Vac)
PROBE 110Vac
1 2 3
Side Lock
TO SZ-T75
TECHNICAL DATA
Housing : Black ABS Plastic, Auto-extinguish
Front Cover : Polycarbonate Plastic
Dimensions : Frontal : 78 X 36mm,
Depth : 59mm
Panel Cutout : 29 X 71mm
Mounting : Flush panel mounting with fasteners
Protection : IP65 Front (with gasket)
Connections : Screw terminal blocks.
< 2.5sq mm terminal only.
Display : 2 X 17mm 7 segment display &
1 LED for Indication
Data storage : Non-volatile EEPROM memory
Power input : 230 Vac ±15 %, 50-60Hz.
Others on request.
Operating temp. : 0°C to 60°C (non-condensing)
Operating humidity : 20% to 85% (non-condensing)
Storage temp : -25°C to 60°C (non-condensing)
Measuring Range : -45°C to 99°C
Input : NTC probe, SZ-T75
Resolution : +/- 1°C
Accuracy : +/- 1°C
USER INTERFACE
UP In Program mode:
Scroll through parameters &
parameter value.
Touch and hold for 2sec to enter into
PRG Down/
Program program mode.
In program mode:
Decreases parameter value
In program mode :
SET Set
set/save the changed value of parameter.
ac/dc )
Sr.
Para.
No.
1 P5
5
2 dd
PA
3
4 LP
5 FS
EP
6
7
5
Parameter List :
1
P5 Parameter
Touch & hold
In time it may be possible that the display may be offset by a
degree or so.
To compensate for this error, user may need to add or minus
the degrees required to achieve the correct temperature.
Example : The temperature on the display is 28 C, whereas
the actual temperature is 30 C. User will have to set the P5
parameter to 2, which means that once out of the programming
mode, the temperature on display will be 30 C (28 C+ 2 C).
2
dd Parameter
Each value corresponds to 5 seconds, if the value is set to 1, it
corresponds to 5 seconds, if it is set to 2, it corresponds to 10
seconds and so on.
For example, if this parameter is set to 1, temperature on the
display will be updated after 5 seconds. The same value will be
considered for calculation and logging.
Display delay parameter is applicable only when temperature
is increasing (rising). When temperature is decreasing (falling)
this parameter will not be applicable.
If this parameter is set to 0, this feature will be disabled.
Increases
3
PA Parameter
User cannot enter into program mode, if correct password is
not entered.
If the password is kept other then 0, user need to enter correct
password to enter into program mode.
If password is 0, user can directly access program mode.
INDEX
Description
Probe calibration.
Delay the display of temperature.
Change Password
Keypad Lock
Restore factory defaults
End Programming
Operating Messages
Password Function
Temperature Logging
Function: To set probe calibration.
key for 2 seconds.
O
O
O O O
Min Max Fac.
-10 O C 10 O C 0 O C
Function : This parameter is used to delay
the display of temperature by the set in
this parameter.
Min Max Fac.
0 36 0
Function : To change Password.
Min Max Fac.
-99 99 0