Azbil SR Series User manual

Hybrid Recorder
SR100
(Pen Type)
Instruction Manual
Wiring/Installation
Thank you for purchasing the SR series
Hybrid Recorder.
This manual contains information for
ensuring the correct use of the SR
series Hybrid Recorder. It also provides
necessary information for installation,
maintenance, and troubleshooting.
This manual should be read by those
who design and maintain equipment
that uses the SR series Hybrid
Recorder. Be sure to keep this manual
nearby for handy reference.
No.CP-UM-5749E

1. Introduction....................................................................................................................1
2. For Safe Use...................................................................................................................4
2-1. Preconditions for Use ......................................................................................................................................... 4
2-2. Symbol Mark ...................................................................................................................................................... 4
2-3. Label .................................................................................................................................................................. 4
2-4. Important Explanation ........................................................................................................................................ 5
3. Model Code List .............................................................................................................6
4. Mounting and Wiring .....................................................................................................7
4-1. External Dimensions .......................................................................................................................................... 7
4-2. Mounting ............................................................................................................................................................ 7
1. Panel cutout and mounting method.................................................................................................................... 7
2. Mounting condition ............................................................................................................................................. 8
4-3. Wiring ................................................................................................................................................................. 9
1. Terminal board diagram...................................................................................................................................... 9
2. Precautions on wiring ....................................................................................................................................... 12
3. Power/protective conductor terminals wiring .................................................................................................... 14
4. Measurement input terminals wiring................................................................................................................. 15
5. Alarm output terminals wiring (option) .............................................................................................................. 16
6. Remote contacts terminals wiring and operation selection (option).................................................................. 18
7. Communication I/F terminal wiring (partly option) ............................................................................................ 21
5. Part Names ...................................................................................................................26
5-1. Front Section of Internal Unit............................................................................................................................ 26
5-2. Operation/Set Keys .......................................................................................................................................... 27
6. Operation......................................................................................................................28
6-1. Preparation for Operation................................................................................................................................. 28
1. How to set chart paper ..................................................................................................................................... 28
2. How to set plotter pen and cartridge pen.......................................................................................................... 29
3. How to set power frequency............................................................................................................................. 30
6-2. Basic Operation................................................................................................................................................ 31
1. Power on .......................................................................................................................................................... 31
2. Switching of display.......................................................................................................................................... 31
3. Chart recording operation................................................................................................................................. 32
7. Inspection and Maintenance.......................................................................................35
7-1. Routine Inspection............................................................................................................................................ 35
7-2. Consumable Parts and Replacement Guideline............................................................................................... 35
7-3. Battery removal method for the purpose of disposa ......................................................................................... 36
Table of contents

- 1 -
1. Introduction
Thank you for purchasing SR series (Pen Type) with 100mm recording width.
This industrial use instrument records input signals to the chart paper and stores data into the SD card.
Mount this instrument on the indoor instrumentation panel etc. and record signals of temperature sensor, pressure gauge,
hygrometer and flow meter. Reading signals of the recorder are thermocouple, resistance thermometer, DCmV and DCV.
Make sure to read this instruction manual in advance to understand this unit well and prevent troubles from occurring. This
manual is a “Wiring/Installation” Instruction manual.
Read the "General" Instruction manual from the CD-ROM provided when using the unit.
- To the persons doing instrumentation, installation, and sales -
Make sure to provide this instruction manual to the person who uses the unit.
- To the users of this unit -
Store this instruction manual with care until you scrap the unit.
Also, write down the parameter contents set in the product and keep it for your record.
Re
q
uest
This product is warranted for one year from the date of delivery. If it is damaged during the warranty period, when used
normally based on the cautions in the instruction manual labels attached to the product, etc., it will be repaired without
any charge (only in Japan). In the case, we are sorry to trouble you, but please contact your dealer or nearest our sales
office.
However, in cases of the followings, it will be repaired at your expense even during warranty period.
1. Failure or damage caused by improper use or connection, or invalid repair or modification.
2. Failure or damage caused by fire, earthquake, wind or flood, thunderbolt, or other extraordinary natural phenomena,
or pollution, salt, harmful gas, abnormal voltage, or use of unspecified power.
3. Replacement of parts or accessories that have reached the end of their life.
Furthermore, the term ‘warranty’ in this sense covers only a Azbil ’s product itself. Therefore, we are not responsible for
compensation for whatever the damage that is triggered by failure of our product.
Product warrant
y
p
eriod
1. No part of this manual can be reproduced or copied in any form without permission.
2. The contents of this manual may be altered without prior notice.
3. This manual has been documented by making assurance doubly sure. However, if any question arises or if any error,
an omission, or other deficiencies are found, please contact your nearest our sales office.
4. Azbil is not responsible for any operation results of this software.
Notice
1. Microsoft, Windows, Windows XP, Windows Vista, Windows 7, and NET Framework are trademarks of Microsoft
Corporation and the related company.
2. SD Memory Card is the trademark of Panasonic Corporation, SanDisk Corporation in USA, and TOSHIBA
CORPORATION.
3. Other described company names and product names are trademarks and registered products of the respective
companies.
4. Please note that the marks “TM” and “®” are omitted throughout this manual.
Trademark
Perchlorate Material
This instrument uses battery with Perchlorate Material.
Special handling may apply, see
http://www. dtsc.ca.gov/hazardouswaste/perchiorate
Warning

- 2 -
Before use
Make sure to check the following before use after unpacking the unit. If you have any question, please contact your dealer or
our nearest office.
1. Exterior check
Check that the appearance of the product has no damage.
2. Model code check
Check that the model code of the purchased product is correct.
Model code label and application place
The label as follows is attached on the upper surface of the product case and the chassis.
Model code → SR-  
Serial number →Y5 CHINO
M A D E I N J A P A N
3. Accessories check
Check the following accessories attached to the product.
Item Q'ty Remarks
Instruction manual 1 CD-R
Instruction manual [Installation/Wiring] 1 Booklet
Bracket 2 (1 set) For panel mounting, 22025-029001
Terminal screw 5 M3.5, for input terminal (spares for missing)
Chart paper 1 81406088-001
Cartridge pen (Analog pen) 1 each Red (1st pen), Green (2nd pen)
Blue (3rd pen), Brown (4th pen)
Plotter pen (Digital pen) 1 Purple
In addition, if accessories are purchased additionally, those products may be attached.
1. Do not drop the product while take it out of the box
2. When transporting the unit, pack in the dedicated package box, and put the box in an outer case with a bed of
cushion.
With the consideration to the case above, it is recommended that the dedicated package box for the unit is stored.
3. When the unit is removed from the panel and not used for a long time, put it in the dedicated package box, and store
it in a place with normal ambient temperature and less dust.
Request

- 3 -
4. About attached chart paper
For the unit, the chart paper 81406088-001 (1 book) is available and attached. For the case that the chart paper is to
be specified, various scales are available as follows.
Item Item number Printed scale
(The following numbers are printed.) Remarks
Folding chart
50 divisions 81406088-001 0,20,40,60,80,100 10 books
16m
Folding chart
40 divisions 81425048-004
0,10,20,30,40
0,20,40,60,80
0,50,100,150,200
The above 3 paterns are printed.
10 books
16m
Folding chart
50 divisions 81425048-001
0,10,20,30,40,50
0,20,40,60,80,100
0,40,80,120,160,200
The above 3 paterns are printed.
10 books
16m
Folding chart
60 divisions 81425048-002
0,10,20,30,40,50,60
0,20,40,60,80,100,120
0,50,100,150,200,250,300
The above 3 paterns are printed.
10 books
16m
Folding chart
70 divisions 81425048-003 0,2,4,6,8,10,12,14 10 books
16m
Folding chart
75 divisions 81425048-005 0,50,100,150 10 books
16m
Clean paper chart
50 divisions 81407115-001 0,20,40,60,80,100 10 books
12m
* The chart paper has the same printed linear scale as the standard scale.
Therefore, it can be shared in regardless of input types (thermocouple, resistance thermometer, or others).
5. Restriction of digital recording/printing function
(1) When the chart speed is set to 150mm/H or more, printing function for other than time line, power-on printing,
data printing, list printing and setting change mark is disabled.
(2) Printing is formed with dots of one pin. Therefore, if the power is turned off while characters are being formed,
they cannot be formed correctly. This is not abnormal.
6. Service parts
For the unit, service parts are available as follows.
Item Item number Remarks
Cartridge pen (Analog pen) Red SR-931CP000R 3 pieces
Cartridge pen (Analog pen) Green SR-931CP000G 3 pieces
Cartridge pen (Analog pen) Blue SR-931CP000B 3 pieces
Cartridge pen (Analog pen) Brown SR-931CP000C 3 pieces
Plotter pen (Digital pen) Purple 81446296-001 3 pieces
SD card 512MB SR-911SD0512
1GB SR-911SD1000
2GB SR-911SD2000
250Ωresistor Accuracy ±0.02% 81401325 1 resistor
Accuracy ±0.05% 81446642-001 2 resistors

- 4 -
2. For Safe Use
If the unit is used in a manner not specified by the manufacturer, the protection provided by the unit may be impaired.
For safe use of the unit, please read and understand the following cautions.
2-1. Preconditions for Use
The unit is a component type general product to be used mounted on an indoor instrumentation panel. Avoid using under
other conditions.
Use after the system safety is implemented such as fail-safe design and periodical inspection on the final product side. Also,
for wiring/adjustment/operation of the unit, ask professionals with instrumentation knowledge to perform.
Furthermore, the person who actually uses the unit is required to read this instruction manual to fully understand various
cautions and basic operation.
2-2. Symbol Mark
This instruction manual includes the following symbol marks. Make sure to fully understand the meaning of them.
Symbol mark Meaning
Cautions are explained to avoid causes for death or serious injuries of users.
Cautions are explained to avoid causes for slight injuries of users or damages of the unit or
peripheral devices.
2-3. Label
For safe use of the unit, the following labels are used.
*For one pen type.
Label ”Name” and place Meaning
“Alert symbol mark”
Various terminals
(back side)
Place to be handled with cautions to avoid “electric
shock”, “injuries”, etc.
“Protective conductor terminal”
Right side of power terminal
(back side)
Terminal to be grounded to avoid electric shock
100 to 240V AC*
50/60Hz, 37VA
“Power source specification”
Power conductor terminals
Specification of power (voltage range, frequency, and
power consumption) used for the unit
! Warning
! Caution
!

- 5 -
2-4. Important Explanation
To avoid severe accidents, make sure to read and understand the following.
1. Switch and overcurrent protection device
This unit is not provided with a replaceable overcurrent
protective device. Prepare a switch and an overcurrent
protective device for the power supply (circuit breakers,
circuit protectors or the like) within 3m of this unit in a location
where the operator can access easily. Use a switch and an
overcurrent protective device conforming to IEC60947-1 and
IEC60947-3.
2. Be sure to ground this instrument
To avoid electric shock, before turning the power on, connect
the protective conductor terminal of this recorder to the
protective conductor of the power supply equipment, and do
not remove it during use.
3. Before turning on the power supply
For safety, first check that the power source is within the
range indicated on the power label, and then turn on the
external power switch.
4. Avoid repair and modification
Avoid repair and modification with parts replacement by
persons other than service personnel authorized by Azbil.
Not only damage or malfunction of this recorder may occur,
but also dangers such as electric shock may occur. In
addition, the inner unit does not have to be pulled out in the
normal use.
5. Use the unit following the instruction
manual
For safe use, use the unit following the instruction manual.
Please note that Azbil does not have any responsibilities for
any claims for failures or damages occurred with abuse or
misuse of this recorder.
6. Installing the safety device
Regarding the use of devices that anticipates a big loss due to failure of this unit, always install a safety device for
preventing these losses and implement fail safe design in the final instrumentation. Do not use this unit in important in
facilities related to, human life, atomic energy, aviation and space.
7. Turn off the power supply if abnormality occurs
Turn off the power supply immediately and contact your local Azbil’s sales office if any abnormal odor, noise or any
smoke occurs, or if this unit becomes high temperature that is too hot to be touched.
8. Do not put hands in this product
Do not put your hands or tools inside of this product. It may cause electric shock or injuries.
There is no operation such as pulling out an inner unit or using tools when using this product.
! Warning
Switch
Overcurrent
protection
device
To the protective
conductor of power
supply facility
Power/protective
conductor terminal
Power source
For safety, the fuse below is included in the
power unit of the unit. It cannot be replaced.
Manufacturer: Daito Communication
Apparatus Co., Ltd
Model:SBL32
Fuse in power unit
Reference
Power terminal
Protective
conductor
terminal
Power label
100 to 240V AC
50/60Hz 40VA MAX

- 6 -
3. Model Code List
SR-1□□□□□□NNN
Input point
01: 1 pen
02: 2 pen
03: 3 pen
04: 4 pen
Power
A: 100 to 240V AC
Communications
N: None
E: Ethernet
R: RS232C
A: RS422A/RS485
Q: RS232C + RS485
C: RS422A/RS485 + RS485
G: Ethernet + RS422A/RS485 + RS485
Alarm output + remote contacts
0: None
2: 2 mechanical relay 'a' contact alarm outputs
4: 4 mechanical relay 'c' contact alarm outputs + 5 remote contacts
A: 6 mechanical relay 'a' contact alarm outputs + 5 remote contacts
Addition
0: None
D: With inspection results
Y: With traceability certification
T: Tropical treatment*1
B: With inspection results + tropical treatment*1
*1 Tropical treatment does not comply with the CE marking.

- 7 -
4. Mounting and Wiring
4-1. External Dimensions
Dimensions below are with the mounting brackets.
Unit: mm
4-2. Mounting
(1) Use the recorder mounting on an indoor installed instrumentation panel.
(2) Brackets can be attached to a panel of steel with thickness of 2 to 6mm or equivalent
strength. Select thickness of a panel considering weight and depth of the unit with
panel formation for actual use.
(3) For mounting the recorder on the panel, be careful of injury by dropping it.
1. Panel cutout and mounting method
Unit: mm
138 +1
0
+1
0
138 200
200
●Minimum interval on multiple
units mounting
! Caution

- 8 -
(1) Insert the unit into the panel cutout from the front of the panel.
(2) Fix the unit to the panel with provided mounting screws (Tightening torque: 1.0Nm). Two screw holes are located
on upper and bottom surface of the unit.
2. Mounting condition
To avoid accidents, make sure to read and understand the following.
Industrial environment
Select a location distant from sources of electric field or magnetic field and without mechanical vibration or shock.
●Overvoltage category .......II (EN standard) ●Altitude............................. 2000m or less
●Pollution degree ...............2
(EN standard) ●Working place .................. Indoor
Normal operating condition
●Ambient temperature ···0 to 50℃(20 to 65%RH,non-condensing)
●Ambient humidity ········20 to 80%RH,non-condensing(5 to 45℃)
●Power voltage ············General specification: 100 to 240V AC ±10%
●Power frequency·········General specification : 50/60Hz ±2%
Atmosphere
●For safety, avoid a location with corrosive gas, explosive gas, flammable gas and combustible gas.
●Avoid a location with dust, smoke, or steam.
Mounting angle
●Lateral tilting ··············0 to 10°
●Longitudinal tilting ·······Forward tilting: 0°Backward tilting: 0 to 30°
●View angle·················-10 to +30°with the horizon as the standard
Angles other than the above affect the recording operation.
! Caution
Panel thickness
(2 to 6mm)
Mounting
brackets
Indicator
View angle
About 30°
About 10°

- 9 -
4-3. Wiring
1. Terminal board diagram
The figure below is a diagram of the terminal board with the option [Alarm relay output (6 points ‘a’ contact) + remote
contact and communication interface].
The figure below is a diagram of the terminal board with the option [Alarm relay output (4 points ‘c’ contact) + remote
contact and communication interface].

- 10 -
The figure below is a diagram of the terminal board with the option [Alarm relay output (2 points ‘a‘ contact) and
communication interface].

- 11 -
Alert symbol mark ( ) and location
Mark is attached to the location to which if human body touches, an electric shock
may be generated.
Terminal name Location of attached mark
Power terminal Lower left of power terminal
Measurement input terminal Upper left of terminal cover
Mechanical relay ‘c’ contact alarm terminal Upper left of terminal cover
Mechanical relay ‘a’ contact alarm terminal Lower left of N.O terminal
!
!
! Warning
For easy wiring, the input unit, alarm output/remote contacts unit, and communication unit are removable.
(1) Every unit can be removed when two mounting screws are removed.
(2) The recorder and each unit are connected with a connector.
Turn off the power and then remove/attach
Make sure to turn off the external power switch before units are removed/attached to
prevent damages on electric circuits.
Input terminal block and alarm terminal block are removable.
Reference
Only thermocouple input unit cannot be replaced with other instrument unit. If done so, measurement errors are
generated.
Note Thermocouple input unit replacement
! Warning
[Alarm output/remote contacts unit]
[Input unit] [Communications unit]
Mounting screws
Mounting screws
Mounting screws

- 12 -
2. Precautions on wiring
Precautions on wiring are described below. Observe them to maintain safety and reliability.
1) Feed power source
For the power source for the unit, use the single-phase power source with stable voltage and without
waveform strain to prevent malfunctions.
(1) Switch and overcurrent protective device
Add a switch and overcurrent protective device (250V, 3A) to the feed power source to
prevent an electric shock on wiring. The unit has no replaceable fuse.
(2) Connect after the power source is turned OFF
When performing power and input/output wiring, make sure to turn OFF the feed power
source to prevent an electric shock.
2) Separate from strong power circuits
For input/output wiring, avoid adjacency or parallel with strong power circuits such as power lines. Separate
50cm or more for adjacency or parallel.
3) Separate thermocouple input from heat sources.
To reduce reference junction compensation errors for thermocouple input, especially separate terminals from
heat sources (heating body). Also, avoid radiation such as direct sunlight.
4) Separate from noise sources.
Separate from noise sources as much as possible. Unexpected troubles may occur. If separation from noise
sources is disabled, implement countermeasures.
Main source Countermeasures
Electromagnetic switch or others
Power line with distortion of wave
Inverter
Thyristor regulator
Insert noise filters between power source and input/output
terminals. CR filters are used in many cases.
! Warning

- 13 -
5) Use crimping terminals.
(1) To prevent looseness or disconnection of terminals and short circuit between terminals, install crimping
terminals to termination of connection cables.
(2) To prevent an electric shock, use crimping terminals with insulation sleeves.
Terminal Type and Termination Treatment
Terminal board Diameter Tightening torque Termination treatment (Unit: mm)
Power/Protective
conductor M4 1.2Nm
O type
Communications
terminal M3 0.5Nm
O type t: 0.8 Y type
* Use O type as possible.
Terminals other
than the above M3.5 0.8Nm
O type Y type
* Be sure to use O type for the alarm output terminals.
* For other terminals, use also O type as possible
6) Unused terminals
Avoid using unused terminals for relaying. Electric circuits may be damaged.
Treat properly the wired cables.
Treat surely wired cables not to get hung up on people and things.
Disconnection of wiring with hanging up may cause an electric shock.
8.5 or less 4.3 or more
t: 0.8
With an insulation sleeve
t: 0.8
8 or less 3.7 or more
t: 0.8
With an insulation sleeve
8 or less 3.7 or more
With an insulation sleeve
t: 0.8
! Warning
5.2 or less 3.2 or more
With an insulation sleeve
5.2 or less
With an insulation sleeve
3.2 or more

- 14 -
3. Power/protective conductor terminals wiring
1) Power/protective conductor terminals
 Turn OFF feed power source.
Before power/protective conductor terminals wiring, make sure to turn off the feed power
source to prevent an electric shock.
2) Power terminal wiring
Using 600V vinyl insulated cables as the power line, install
crimping terminals with insulation sleeves to the
termination for wiring.
Note: Use the following standard cables.
(1) IEC 60227-3
(2) ANSI/UL817
(3) CSA C22.2 No.21/49
3) Protective conductor terminal wiring
Make sure to connect to the protective conductor of the
power equipment. Install crimping terminals with insulation
sleeves for wiring.
Grounding wire: Copper cable with wire diameter
2mm2or more (green/yellow)
 mark at power terminals
After wiring the power terminals have power supply voltage applied. Make sure to install
power terminal covers after wiring to prevent an electric shock.
 Pay attention to power supply voltage and noise.
The power supply voltage of the unit is indicated on power terminals. Applying power other
than the indicated one causes accidents or malfunction. In addition, if the power has noise
interference, implement countermeasures such as noise cut transformer installation.
!
! Warning
! Warning
! Caution
Display based on CSA standard in Canada. The live side
of single-phase AC power supply is L, and the neutral side
is N display. To get sufficient performance, observe the L/N
ii
L/N display of power terminal
Note
Power terminal
L N
Protective conductor
terminal
100 - 240V AC
50/60Hz 40 VA MAX
Power (voltage, frequency, and power consumption)
!
A
fter wiring, install the
terminal cover.
L N
Copper cable (green/yellow)
with 2mm2 of wire or more
Make sure to connect to
protective conductor of power
facility.
600V vinyl insulated
cable
Power source

- 15 -
4. Measurement input terminals wiring
1) Measurement input terminal
Turn OFF the feed power source before wiring
to prevent an electric shock.
Install crimping terminals with insulation
sleeves to input terminals for wiring.
2) DC voltage (current) input wiring
Use instrumentation twisted cables for
measures against noise as input cables.
For current input, connect the shunt resistor for
current input to the channel to be measured
before wiring.
3) Thermocouple (TC) input wiring
Make sure to wire thermocouple cable (or
compensation lead wire) to input terminals of
the unit.
If a copper conductive wire is connected
halfway, big measurement error will be
generated.
In addition, avoid parallel connection of a pair
of thermocouple wires with other instruments
(controller or others) that cause troubles.
4) Resistance thermometer (RTD) input wiring
To prevent measurement errors, use 3-core
cables as the input cable in which lines have
the same resistance.
In addition, one resistance thermometer
cannot be connected in parallel with other
instruments (a controller or others).
mark on measurement input terminals
High voltage may be applied to the measurement input terminals due to common mode
noise. Allowable noise value is 30VAC or 60VDC or less. Check that the voltage is equal to
or less than the allowable value. Install terminal covers after wiring to prevent an electric
shock and protect input cables. For thermocouple input, installing terminal covers reduces
reference junction compensation errors.
!
!
! Warning
Instrumentation
twisted cable
DC voltage input
(+)
(
-
)
1 2 3 4
DC voltage (current) input !
Compensation leas wire
Red (+)
White (-)
1 2 3 4
Thermocouple (TC) input
Thermocouple
Resistance thermometer (RTD) input
3-core cable (Same line
diameter, same length)
Note: Cable resistance per 1 cable is 10Ωor less.
3 lines have the same resistance.
Resistance thermometer
A
B
B
!
1 2 3 4
Allowable input voltage
Input type Allowable input voltage
Voltage, thermocouple input ±10VDC *
Resistance thermometer input ±6VDC
*±60VDC for channels specified with ±10V ran
g
e or more
Caution
!

- 16 -
5) Input unit terminal cover mounting/removing
(1) Raise the cover to the direction of the arrow.
(2) Turn to the direction of the arrow.
(3) Pull it out to the direction of the arrow to remove.
5. Alarm output terminals wiring (option)
1) Alarm output terminals
The terminal configuration depends on the output specification.
Alarm relay output 6 points (‘a’ contact)
Alarm relay output 4 points (‘c’ contact)
Alarm relay output 2 points (‘a’ contact)
N.O terminal (M3.5)
COM terminal (M3.5)
Alarm relay output
(6 points)
N.O terminal (M3.5)
COM terminal (M3.5) Alarm relay terminal
(4 points)
1 2
3 4
N.C terminal (M3.5)
(1)
(2)
(3)
COM terminal (M3.5)
N.O terminal (M3.5)
COM terminal (M3.5)
N.O terminal (M3.5)
ALARM RELAY
2
1

- 17 -
2) Wiring
Turn OFF the feed power source and the power source for buffer relay before wiring to prevent an electric
shock.
(1) Wire the cable to the load via the buffer relay.
(2) To the alarm output terminals, type O crimp style terminal with insulation sleeve which is connected to
double insulated signal wire should be connected. (Refer to 4-3. Wiring, 2. Precautions on wiring)
Mechanical relay ‘a’ contact output example Mechanical relay ‘c’ contact output example
* N.C terminal is opened on alarm occurrence in opposite way to N.O terminal.
mark on alarm output terminals
Maximum of 240VAC can be connected to the alarm output terminals of this unit.
Basic insulation (dielectric strength 1390V) is carried out between the alarm output
channels, however, from the malfunction etc. 240VAC may be output to each alarm
output terminals. Double insulation or reinforced insulation to the outside circuit
connected to an alarm output terminal should be set.
A buffer relay power supply is applied to the alarm output terminals after connections and
so creates a risk of electric shock if touched. Terminal cover must be mounted after
connection. Moreover, safety measures to the outside circuit should be set
Implement safety measures.
The alarm output of the unit may generate output failure with wrong operation, failure,
abnormal input, or others. Double insulation or reinforced insulation in outside circuit side of
all the channels should be set in any system for safety ensuring.
!
: Contact protective element
(Attachment to ‘a’ side is desirable.)
Buffer relay
Recorder
Power
Load
ZZ
N.C
N.O
COM
ba
: Contact protective element
(Attachment to ‘a’ side is desirable.)
N.O
COM
ba
ZZ
Buffer relay
Recorder
Power
Load
! Caution
! Warning
*
240VAC
Max
Load
240VAC
Max Load
Recorder
*Basic insulation between output channels
Double insulation
or
Reinforced insulation

- 18 -
3) Precautions on wiring
The following are precautions on wiring.
Item Description
Mechanical relay output
specification contact
capacity
(Common to ‘a’ contact and
‘c’ contact)
Power supply Resistance load Inductive load
100VAC 2A 1A
240VAC 2A 1A
30VDC 2A 1A
Contact protective element
Z installation
Install the contact protective element which fits the buffer relay.
It is effective to install the element to the coil side of the buffer relay (see the figure of
mechanical relay ‘a’ contact output example) and prevents wrong operation with light
load.
Selection of buffer relay Coil rating: Contact capacity or less of output terminals
Contact rating: Double of load current or more
In addition, the coil surge absorption element built-in type relay is recommended. If there
is no buffer relay which meets the load rating, implement another stage of buffer relay.
Selection of contact
protective element
If there is no surge absorption element built-in buffer relay, install this element.
The element of C/R (capacitor + resistor) is general.
<C/R standard> C: 0.01μF (Rating about1kv)
R: 100 to 150Ω(Rating about 1W)
6. Remote contacts terminals wiring and operation selection (option)
Only with remote contacts terminals (option).
1) Remote contacts terminals
2) Wiring
Turn OFF the feed power source before wiring to
prevent an electric shock.
(1) Use no voltage contact signals to be given to the
remote contacts terminals.
(2) Install crimping terminals with insulation sleeves to
remote contacts terminals for wiring.
■Wiring example
Voltage on contact open: About 5V
Current on contact short: About10mA
Note Characteristics of contact
input terminals
(Minimum load)
100μA100mVDC
Upper row
Remote contacts
terminals