Daiichi Electronics SVD-H-105 User manual

SVD-208-053
INSTRUCTION MANUAL
AC VOLTAGE ALARM SETTER
SVD-□-105
SVD-□-105D
(With contact delay circuit)

SVD-208-053
1
Introduction
Thank you for your purchase of our product.
Read this instruction manual carefully before installation, wiring, and using this product.
Keep this instruction manual handy for reference at any time.
Have a contact with us or sales agent in case that this instruction manual is lost or damaged.
<Caution>
Have a contact with us when you have any questions or are aware of missing article.
Safety precaution
Important contents are mentioned in this instruction manual to prevent any damage/use this product appropriately.
Keep the following safety precaution in mind after understanding each sign.
Inappropriate usage leads to the possibility of death/damage
Inappropriate usage leads to the possibility of death/damage
Inappropriate usage leads to the possibility of death/damage
■ We are not responsible for the damage caused by following condition(earthquake/fire which is not caused by us,
action by third party, other accident, damage caused by our customer, misuse, product usage under abnormal
condition).
■ We are not responsible for secondary damage caused by product use/product malfunction(loss of profit, halt of
business operation). We are also not responsible for damage caused by false operation in combination with connecting
equipment which is beyond our control.
● Do not disassemble, remodel and repair this product.
Have a contact with us or sales agent when product failure happens to prevent fire/electric shock/injury.
● Do not get this product wet to prevent heat generation/ignition/product failure. When this product gets wet, stop
using it.
● Do not connect metal excepting wiring to terminal in order to prevent heat generation/ignition.
● Do not get this product near the inflammables/combustible chemicals/gas to prevent fire.
● Connect specified power supply.
Connecting power supply beyond specification causes fire/product failure.
● When dust is on the terminal, wipe it off after power is OFF to prevent fire.
● Follow the below-mentioned procedure when abnormality(fuming/bad odor) happens.
(1) Stop using after power and input are OFF.
(2) Have a contact with us or sales agent.
● Do not use this product in a environment of high temperature/high humidity to prevent any damage.
● Do not touch the terminal during operation to prevent electric shock.
● Do not pull/bend connecting cable with force. Cable damage causes heat generation/burn and contact failure leads
to equipment damage.
● Do not connect/inspect with wet hands to prevent electric shock.
Other precaution
■ Don't mount or store this unit in the following environment.
Places where corrosive gas is generated (SO
2 / H 2 S / etc.).
Places where dust is generated.
Places with much vibration and shock.
Places with influence of external magnetic field (２).
Note (１) Corrosive gas = Sulfur dioxide SO 2 / Hydrogen sulfide H 2 S / etc.
(２) Large current bus / saturable reactor / etc.
■ Wipe off dirt on the surface with dry cloth softly. Keep in mind that strong rubbing of nameplate leads to character
disappearance. Organic solvent is not appropriate for cleaning.
■ Mercury component, Nickel-cadmium battery are not used in this product.
■ This product is disposed as an industrial waste (Non-inflammable).

SVD-208-053
2
Content
1. Product outline ･･･････････････････････････････････････････････････････････ 3
1.1 Features of product ･････････････････････････････････････････････････････ 3
1.2 Composition of type ･････････････････････････････････････････････････････ 3
2. Specification and performance
2.1 Specification ･･･････････････････････････････････････････････････････････ 3
2.2 Performance ･････････････････････････････････････････････････････････････ 4
2.3 Control output condition ････････････････････････････････････････････････ 5
3. Handling explanation
3.1 Outline dimension ･･･････････････････････････････････････････････････････ 6
3.2 Installation ････････････････････････････････････････････････････････････ 6
3.3 Connection ･･････････････････････････････････････････････････････････････ 7
3.4 Handling explanation ････････････････････････････････････････････････････ 7
3.4.1 Settings ････････････････････････････････････････････････････････････ 7
3.4.2 Cautions on connections ･････････････････････････････････････････････ 7
4. Principle of operation
4.1 Block-diagram ･･･････････････････････････････････････････････････････････ 8
4.2 Operating explanation ･･･････････････････････････････････････････････････ 8
5. Maintenance
5.1 Maintenance ･････････････････････････････････････････････････････････････ 8
5.2 Countermeasures against troubles ････････････････････････････････････････ 8

SVD-208-053
3
1. Product outline
This product is the setting instrument for instrumentation of the plug-in type that detects excess and deficiency
to AC-voltage input, and outputs a contact signal.
1.1 Features of product
① This product is the high quality and high reliability and noise-proof design.
② Detection action can be checked in a light emitting diode.
③ The dead-band range can do variable.
④ It can be established clearly by the digital switch.
⑤ This product is compact plug-in type.
1.2 Composition of type
SVD- (1) -105 (2)
(1) (2)
Mark Contents Mark Contents
H High limit setting － With no contact delay circuit
L Low limit setting D With contact delay circuit
HL High and low limit setting
HH 2 steps of high limit setting
LL 2 steps of low limit setting
2. Specification and performance
2.1 Specification
Item Specification
Input
(Input current)
① 0～300V (1mA) 50/60Hz
② 0～220V (1mA) 50/60Hz
③ 0～173.2V [300/√3V] (1mA) 50/60Hz
④ 0～150V (1mA) 50/60Hz
⑤ 0～127V [220/√3V] (1mA) 50/60Hz
⑥ 0～110V (1mA) 50/60Hz
⑦ 0～86.6V [150/√3V] (1mA) 50/60Hz
⑧ 0～63.5V [110/√3V] (1mA) 50/60Hz
Auxiliary supply
① AC･DC80～264V (AC100/110V 50/60Hz, AC200/220V 50/60Hz, DC100/110V)
AC power：5.7VA, DC power：2.2W
② DC38～58V (DC48V) 2.2W
③ DC19～29V (DC24V) 2.2W
Output
Contact output Each 1c
Contact
capacity
Maximum switching load：AC250V 2A (cosφ=1)，DC110V 100mA (L/R＝7ms)
Minimum switching load：DC5V 10mA
Use relay
G6C-2114PUS (OMRON Corporation)
Mechanical life：50 million times (Switching frequency, 300 times/minute)
Electric life：100,000 times (Switching frequency, 30 times/minute)
Setting range
H H ：10～99％ (1％ step) ，L ：
－
L H ： － ，L ：10～99％ (1％ step)
HL H ：10～99％ (1％ step) ，L ：10～99％ (1％ step)
HH H1：10～99％ (1％ step) ，H2：10～99％ (1％ step)
LL L1：10～99％ (1％ step) ，L2：10～99％ (1％ step)
Dead band 0.5～5％ continuation variable
Starting delay time(３) 0.5 second (Standard) (Production is possible in 0.5～10s in 0.5s step.)
Contact delay (３) Option (Production is possible in 0.5～10s in 0.5s step.)
Operation temperature
and humidity -10～+55℃ ，30～85％ RH
Storage temperature -30～+60℃
Case color Black (Munsell N1.5)
Note(３) Starting delay and contact delay (option) cannot be designated simultaneously.
［In case of starting delay designation.］(TYPE：SVD-□-105)
［In case of contact delay designation.］（TYPE：SVD-□-105D）
Contact delay is set to below 0.3 seconds of input-and-output response of product. Starting delay becomes
almost the same as the time of contact delay.

SVD-208-053
4
2.2 Performance
Item Specification
Setting accuracy ±1.0％ (％ for maximum input value)
Repeatability ±1.0％ (％ for maximum input value)
Response time Operating time 90⇔110％ of step input to operation value. Less than 300ms
Reset time 110⇔90％ of step input to operation value. Less than 300ms
Influence of
temperature
Error of operation value：±1.0％ (％ for maximum input value) By 23±20℃
Error of operation time and contact delay：10.0％
Influence of auxiliary
supply
Error of operation value：±1.0％ (％ for maximum input value) To auxiliary
supply range.
Error of operation time and contact delay：10.0％
Influence of frequency Error of operation value：±1.0％ (％ for maximum input value) By 45～65Hz
Error of operation time and contact delay：10.0％
Influence of distorted
wave
Error of operation value：±1.0％ (％ for maximum input value) 3rd-harmonic,
15％ mixing
Error of operation time and contact delay：10.0％
Overload capacity
Voltage input 2 times 10 seconds, 1.2 times continuation of rated voltage.
Auxiliary supply 1.5 times 10 seconds of rated voltage.
Upper limit of the auxiliary supply voltage range is continued.
Insulation resistance
Between electric circuit and case.
Above 50MΩ at DC500V megger.
Between input terminals and auxiliary supply
terminals and contact output terminals.
Withstand voltage
Between electric circuit and case.
AC2000V (50/60Hz) 1 minute.
Between input terminals and auxiliary supply
terminals and contact output terminals.
Impulse withstand
voltage
Between electric circuit and case. 5kV 1.2/50μs. Positive and negative
polarity, for each 3 times.
Between auxiliary supply terminals. 3kV 1.2/50μs. Positive and negative
polarity, for each 3 times.
Noise-capacity
Oscillatory surge voltage
If a vibration damping waveform (1～1.5MHz, Peak voltage : 2.5～3kV) is repeated and added,
there is no malfunction.
Auxiliary supply circuit (Normal / Common)
AC input circuit (Normal / Common)
Contact output circuit (Common)
Square wave impulse noise
If a noise (1μs, 100ns width) is repeated and added, there is no malfunction.
Auxiliary supply circuit (Normal / Common) Over 1.5kV
AC input circuit (Normal / Common) Over 1.5kV
Contact output circuit (Common) Over 1.0kV
Electric wave noise
If intermittence irradiation of the electric wave of a 150,400MHz band is done by (1W, 1m),
there is no malfunction.
Electrostatic noise
±8kV (at the case of energization) is that there is no malfunction.
±10kV (at the case of no-voltage) should not have damage or the abnormalities of parts.
Vibration Malfunction：Frequency 16.7Hz, Double amplitude 1mm to X, Y, Z direction for 10 minute.
Durability ：Frequency 10～25Hz, Double amplitude 2mm to X, Y, Z direction for 2 hours.
Shock Malfunction：Shock of 98m/s
2
to X,Y,Z direction for 3 times.
Durability ：Shock of 294m/s
2
to X,Y,Z direction for 3 times.

SVD-208-053
5
2.3 Control output condition ( ：Status of input )
■
H type
Power and input
conditions. Drawing of input state. Contact status LED indication status (At contact operating, ON)
Power OFF
0F.S
H
213 OFF
H
Power ON
Input ＜ H 0F.S
H
213 OFF
H
Power ON
H ≦ Input 0F.S
H
213 ON
H
■
L type
Power and input
conditions. Drawing of input state. Contact status LED indication status (At contact operating, ON)
Power OFF L
0F.S 213 OFF
L
Power ON
Input ≦ L
L
0F.S 213 ON
L
Power ON
L ＜ Input
L
0F.S 213 OFF
L
■ HL type
Power and input
conditions. Drawing of input state. Contact status LED indication status (At contact operating, ON)
L H
Power OFF L
0F.S
H
10 911 213 OFF OFF
LH
Power ON
Input ≦ L
L
0F.S
H
10 911 213 ON OFF
LH
Power ON
L ＜ Input ＜ H
L
0F.S
H
10 911 213 OFF OFF
LH
Power ON
H ≦ Input
L
0F.S
H
10 911 213 OFF ON
LH
■
HH type
Power and input
conditions. Drawing of input state. Contact status LED indication status (At contact operating, ON)
H1 H2
Power OFF H1
0F.S
H2
10 911 213 OFF OFF
H1 H2
Power ON
Input ≦ H1
H1
0F.S
H2
10 911 213 OFF OFF
H1 H2
Power ON
H1 ＜ Input ＜ H2
H1
0F.S
H2
10 911 213 ON OFF
H1 H2
Power ON
H2 ≦ Input
H1
0F.S
H2
10 911 213 OFF ON
H1 H2

SVD-208-053
6
■
LL type
Power and input
conditions. Drawing of input state. Contact status LED indication status (At contact operating, ON)
L2 L1
Power OFF L2
0F.S
L1
10 911 213 OFF OFF
L2 L1
Power ON
Input ≦ L2
L2
0F.S
L1
10 911 213 ON OFF
L2 L1
Power ON
L2 ＜ Input ＜ L1
L2
0F.S
L1
10 911 213 OFF ON
L2 L1
Power ON
L1 ≦ Input
L2
0F.S
L1
10 911 213 OFF OFF
L2 L1
3. Handling explanation
3.1 Outline dimension
3.2 Installation
The environmental conditions of installation
space. Please select indoors without low
mechanical vibration, dust, and corrosive gas.
And, please select indoors without the
influence of the strong electric magnetic
field by the large current bus, saturable
reactor.
Please prepare the installation interval more
than the right figure in consideration of
radiation by the natural convection of air.
If the duct for wiring is used, please detach
20mm or more from the upper surface and the
undersurface of a body.
A mounting instruction can select 35mm width
DIN rail mounting and screw mounting.
In screw mounting, please install with M4
screw.
However, the screw is not attached. The tightening torque of a screw, M4：1.08～1.47N･m(11～15kg･cm)
Setting switch (1) Setting switch (2)
HH H1 H2
LL L2 L1
HL L H
H ― H
L ― L
● Mounting dimension drawing (Unit mm)

SVD-208-053
7
3.3 Connection
TYPE Contact
HH H1 H2
LL L2 L1
HL L H
H － H
L － L
3.4 Handling explanation
The usage of this product should check the name plate and specification of actual goods, and should perform the
right handling.
3.4.1 Settings
(1) The setup of operation value.
Please set to needed operation value in a front digital switch.
It can set to 10～99％ (1％ step), using rated voltage as 100％.
<Caution> If a digital switch is set in the state of power-supply applying, detection action may be done even
if it does not exceed set value. (They are not the abnormalities of a product.)
(2) Variable of dead band.
It can do continuation variable of the dead band in dead-band variable VR. 0.5～5％
3.4.2 Cautions on connections
(1) An external connection terminal is M3.5 screw terminal. Please use a solderless contact for connection with
a terminal.
The tightening torque of a screw is 0.7～0.9N･m(7.1～9.2kg･cm)
(2) In case inductive loads, such as an electromagnetic relay, are connected to contact output, we recommend you
to install a diode, a surge killer, etc. near load like the example of the following figure.
《 An example of a spark elimination circuit 》
Ｒ Ｒ
～
R
C
～
Ｒ

SVD-208-053
8
4. Principle of operation
4.1 Block-diagram
AC voltage input AC/DC Amplifier Comparator Drive circuit Ry1
Setting
part
Reference
voltage
±12V
±5V
＋12V
AUX. SUPPLY
Comparator Drive circuit Ry2
Setting
part
Reference
voltage
4.2 Operating explanation
After than AC-voltage input is transforming into DC voltage, constant value is made to amplify and it considers
as the input of comparator.
And, the reference voltage obtained from the control power source is divided in a setting part's digital switch,
this is considered as the input of the comparator of another side, and voltage comparison is performed.
An output operates a relay through a drive circuit.
5. Maintenance
5.1 Maintenance
The quality of this product is secured enough. However, also in order to prevent an accident beforehand, please
check an operation value periodically.
< Caution >
(1) Please do not make a wiring change of the input and auxiliary supply in an energization.
(2) Please check a connection diagram, in case you check the voltage of input, output, and auxiliary supply.
5.2 Countermeasures against troubles
As our principle, we recall product in question and repair it. If judged as product failure, have a contact with
us or sales agent for repairing work (Also have a contact with us or sales agent for specification change).
Product failure which we are not responsible for (When responsibility in manufacturing process is not recognized,
when product is disassembled/remodeled, in case of false operation by customer, etc.) is beyond our warranty.
Head Office : 11-13 Hitotsuya 1-chome, Adachi-ku, Tokyo, 121-8639 Japan.
Phone：[phone] , Fax：[phone]
Kyoto Office : 1-19 Ichinobe-Nishikawahara, Jyoyou-shi, Kyoto, 610-0114 Japan.
Phone：[phone] , Fax：[phone]
DATE：March 3, 2008