WIKA DI25 Operating Instructions Manual
DIGITAL INDICATOR
DI25
Operating instructions
2
Preface
Thank you for purchasing our digital indicator DI25. This manual contains instructions for the mounting,
functions, operations and notes when operating the DI25. To prevent accidents arising from the misuse of this
instrument, please ensure the operator receives this manual.
Notes
• This instrument should be used in accordance with the specifications described in the manual.
• If it is not used according to the specifications, it may malfunction or cause a fire.
• Be sure to follow the warnings, cautions and notices. If they are not observed, serious injury or malfunction may
occur.
• The contents of this instruction manual are subject to change without notice.
• Care has been taken to ensure that the contents of this instruction manual are correct, but if there are any doubts,
mistakes or questions, please inform our sales department.
• Measures must be taken to ensure that the operator cannot touch power terminals or other high voltage sections.
• Any unauthorized transfer or copying of this document, in part or in whole, is prohibited.
• WIKA is not liable for any damage or secondary damage(s) incurred as a result of using this product, including
any indirect damage.
Safety precautions (Be sure to read these precautions before using our products.)
The safety precautions are classified into categories: “Warning” and “Caution”. Depending on circumstances,
procedures indicated by Caution may result in serious consequences, so be sure to follow the directions
for usage.
Warning
Caution
Warning
• To prevent an electrical shock or fire, only WIKA or other qualified service personnel may handle the inner
assembly.
• To prevent an electrical shock, fire or damage to the instrument, parts replacement may only be undertaken
by WIKA or other qualified service personnel.
• This is an equipment of the emission class A that is intended for operation in industrial environment. It can
cause interference under certain circumstances if operated in other environment e.g. residential or
commercial area. In this case the user can be asked to take appropriate measures.
Safety precautions
• To ensure safe and correct use, thoroughly read and understand this manual before using this instrument.
• This instrument is intended to be used for industrial machinery, machine tools and measuring equipment.
Verify correct usage after purpose-of-use consultation with a WIKA service engineer. (Never use this
instrument for medical purposes with which human lives are involved.)
• External protection devices such as protective equipment against excessive temperature rise, etc. must be
installed, as malfunction of this product could result in serious damage to the system or injury to personnel.
Proper periodic maintenance is also required.
• This instrument must be used under the conditions and environment described in this manual. WIKA does
not accept liability for any injury, loss of life or damage occurring due to the instrument being used under
conditions not otherwise stated in this manual.
Procedures which may lead to dangerous conditions and cause death or serious
injury, if not carried out properly.
Procedures which may lead to dangerous conditions and cause superficial to
medium injury or physical damage or may degrade or damage the product, if not
carried out properly.
3
Caution with respect to export trade control ordinance
To avoid this instrument from being used as a component in, or as being utilized in the manufacture of weapons of
mass destruction (i.e. military applications, military equipment, etc.), please investigate the end users and the final
use of this instrument. In the case of resale, ensure that this instrument is not illegally exported.
1. Installation precautions
Caution
This instrument is intended to be used under the following environmental conditions (IEC61010-1):
Overvoltage category , Pollution degree 2
Ensure the mounting location corresponds to the following conditions:
• A minimum of dust, and an absence of corrosive gases
• No flammable, explosive gases
• No mechanical vibrations or shocks
• No exposure to direct sunlight, an ambient temperature of 0 to 50 °C (32 to 122 °F) that does not change
rapidly, and no icing
• An ambient non-condensing humidity of 35 to 85 % RH
• No large capacity electromagnetic switches or cables through which large current is flowing
• No water, oil or chemicals or where the vapors of these substances can come into direct contact with the unit
• Please note that the ambient temperature of this unit – not the ambient temperature of the control panel –
must not exceed 50 (122 ) if mounted through the face of a control panel, otherwise the life of electronic
components (especially electrolytic capacitors) may be shortened.
Note • Avoid setting this instrument directly on or near flammable material even though the case of
this instrument is made of flame-retardant resin.
2. Wiring precautions
Caution
• Do not leave wire remnants in the instrument, as they could cause a fire or malfunction.
• The terminal block of this instrument is designed to be wired from the upper side. The lead wire must be
inserted from the upper side of the terminal, and fastened with the terminal screw.
• Tighten the terminal screw using the specified torque. If excessive force is applied to the screw when
tightening, the terminal screw or case may be damaged.
• Do not pull or bend the lead wire on the terminal side when wiring or after wiring, as it could cause
malfunction.
• Use a thermocouple and compensating lead wire according to the sensor input specifications of this
instrument.
• Use the 3-wire RTD according to the sensor input specifications of this instrument.
• This instrument does not have a built-in power switch, circuit breaker and fuse. It is necessary to install a
power switch, circuit breaker and fuse near the instrument. (Recommended fuse: Time-lag fuse, rated
voltage 250 V AC, rated current 2 A)
• For a 24 V AC/DC power source, do not confuse polarity when using direct current (DC).
• When using a relay contact output type, externally use a relay according to the capacity of the load to
protect the built-in relay contact.
• When wiring, keep input wires (thermocouple, RTD, etc.) away from AC power sources or load wires.
• Do not apply a commercial power source to the sensor which is connected to the input terminal nor allow
the power source to come into contact with the sensor.
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3. Operation and maintenance precautions
Caution
• Do not touch live terminals. This may cause electrical shock or problems in operation.
• Turn the power supply to the instrument OFF before retightening the terminal or cleaning.
• Working on or touching the terminal with the power switched ON may result in severe injury or death due
to electrical shock.
• Use a soft, dry cloth when cleaning the instrument. (Alcohol based substances may tarnish or deface the
unit.)
• As the display section is vulnerable, be careful not to put pressure on, scratch or strike it with a hard object.
Further information:
Internet address: www.wika.de / www.wika.com
Relevant data sheet: AC 80.02
Application consultant: Tel.: +49 9372 132-0
Fax: +49 9372 132-406
info@wika.de
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Contents
1. Model .................................................................................................................................................. 6
1.1 Model ........................................................................................................................................... 6
1.2 Product label ................................................................................................................................ 6
2. Display and controls ........................................................................................................................ 7
3. Control panel mounting ................................................................................................................... 8
3.1 External dimensions in mm ........................................................................................................ 8
3.2 Panel cutout in mm ...................................................................................................................... 8
3.3 Mounting the unit ........................................................................................................................ 8
4. Wiring ................................................................................................................................................. 9
4.1 Terminal arrangement ................................................................................................................. 9
4.2 Lead wire solderless terminal ...................................................................................................... 9
4.3 Using as a current loop supply ...................................................................................................... 10
5. Setup .................................................................................................................................................. 10
5.1 Registering the selected item or value ........................................................................................ 11
5.2 Alarm setting mode...................................................................................................................... 11
5.3 Auxiliary function setting mode 1 ................................................................................................ 11
5.4 Auxiliary function setting mode 2 ................................................................................................ 13
5.5 Maintenance mode ...................................................................................................................... 18
6. Operation ........................................................................................................................................... 19
6.1 Operation ..................................................................................................................................... 19
6.2 Switching SV display indication .................................................................................................. 19
6.3 How to use the alarm output ....................................................................................................... 19
6.4 How to use the event input function ............................................................................................ 19
7. Alarm Action ...................................................................................................................................... 20
7.1 High limit alarm, low limit alarm ................................................................................................... 20
7.2 High/Low limit range alarm action ............................................................................................... 21
8. Specifications .................................................................................................................................... 22
9. Troubleshooting ................................................................................................................................ 24
10. Key operation flowchart ................................................................................................................... 26
11. Dismounting, return and disposal .................................................................................................... 27
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1. Model
1.1 Model
DI25 - M □, □□□□□
Series name: DI25 (W 96 x H 48 x D 100 mm)
Input
M
Multi-function input (*1)
Power supply
H 100 … 240 V AC
L 24 V AC/DC
Output options
3AS
3 alarm outputs for process value monitoring (*2)
P24
Transmitter supply output (DC 24 V max. 30 mA) (*3)
KB
Terminal cover, color black
(*1) Thermocouple (10 types), RTD (2 types), direct current (2 types) and DC voltage (4 types) can be selected
by keypad.
(*2) Alarms A1, A2 and A3 outputs are standard features. Alarm types (4 types for A1, A2, and 5 types for A3 as
well as no alarm action) and energized/de-energized can be selected.
(*3) If transmitter supply output (P24 option) is ordered, A2 output cannot be used.
1.2 Product label
Model labels are attached to the case and the inner assembly.
Top of the case
(Fig. 1.2-1)
No.
Description
Example
①
Model
DI25
②
Order code
DI25-M-H3ASKB
③
Signal input
Multi-function
④
Power supply
24 V
⑤
S# serial no.
201841915
⑥
P# product no.
XXXXXXXX
⑦
Date of manufacture
2018-02
① ② ③
④ ⑤ ⑥
⑦
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2. Display and Controls
(Fig. 2-1)
Display, indicator
Name
Description
PV display
Indicates PV (process variable) or characters in the setting mode with the red LED.
SV display
Indicates A1/A2/A3 value or the set value in the setting mode with the green LED.
HOLD indicator
When PV is held (HOLD, Peak HOLD, Bottom HOLD), the yellow LED is lit.
A1 value indicator
When A1 value is indicated on the SV display, the green LED is lit.
A2 value indicator
When A2 value is indicated on the SV display, the green LED is lit.
A3 value indicator
When A3 value is indicated on the SV display, the green LED is lit.
A1 action indicator
When A1 output is ON, the red LED is lit.
While A1 output is held, the red LED flashes (maintenance mode).
A2 action indicator
When A2 output is ON, the red LED is lit.
While A2 output is held, the red LED flashes (maintenance mode).
A3 action indicator
When A3 output is ON, the red LED is lit.
While A3 output is held, the red LED flashes (maintenance mode).
Key
Name
Description
UP key
Increases the numeric value.
FAST key
Makes the set value change faster while pressing the UP/DOWN key and FAST key
together.
DOWN key
Decreases the numeric value.
MODE key
Selects the setting mode, and registers the set value.
Notice
When setting the specifications and functions of this instrument, connect mains power cable to terminals 2 and 3
first, then set them referring to “5. Setup” before performing “3. Mounting to the control panel” and “4. Wiring”.
FAST key
UP key
MODE key
DOWN key
SV display
PV display
A1 to A4
value indicator
HOLD indicator
TX/RX indicator
A1 to A4 action indicator
8
3. Control panel mounting
3.1 External dimensions in mm
(Fig. 3.2-1)
3.2 Panel cutout in mm
Vertical close mounting
n: Number of mounted units
Caution: If vertical close mounting is used
for the instrument, IP66 may be compromised,
and all warranties will be invalidated.
(Fig. 3.3-1)
3.3 Mounting the unit
Mount the instrument vertically to the flat, rigid panel to ensure it adheres to the ingress protection (IP66).
Mountable panel thickness: 1 to 8 mm
(1) Insert the instrument from the front side of the control panel.
(2) Attach the mounting brackets by the slots on the right and left sides of the case, and secure the instrument in place
with the screws.
(Fig. 3.4-1)
Caution
As the case of the DI25 is made of resin, do not use excessive force while tightening screws, or the mounting
brackets or case could be damaged. 0.12 Nm of torque is recommended.
130
92
＋0.8
0
n×48-3
＋0.5
0
92
＋0.8
0
45
＋0.5
0
Gasket
Terminal cover
48
44.5
2(*)
11.5
98.5
104.5(*)
96
106.2
(*) When terminal cover is used
9
4. Wiring
Warning
Turn the power supply to the instrument off before wiring or checking. Working on or touching the terminal with
the power switched on may result in severe injury or death due to electrical shock.
4.1 Terminal arrangement
(Fig. 4.1-1)
4.2 Lead wire solderless terminal
Use a solderless terminal with an insulation sleeve in which an M3 screw fits as shown below.
0.63 Nm of torque is recommended.
Terminal name
Description
GND
Ground terminal
PWR
Power supply
TRANSMIT OUTPUT1
Transmission output 1
A1
A1 output
A2
A2 output
A3
A3 output
EVENT INPUT
Event input
TC
Thermocouple input
RTD
RTD input
DC
Direct current input, DC voltage input
For direct current input (externally mounted 50 shunt resistor),
connect a 50 shunt resistor (sold separately) between input
terminals.
P24
Insulated power output 24 V (P24 option)
5.8 mm max
3.2 mm
φ3.2 mm
5.8 mm max
(Fig. 4.2-1)
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