New Cosmos Electric PS-7-M User manual

PS-7-M series
Extractive Pump Gas Detector
(detachable sensor/sampling units)
Instruction Manual
Keep this manual for easy reference.
Carefully read this manual prior to use.
This manual describes the standard model. If your unit has end-user-specific options, this
manual will be superseded by your delivery specifications.
Instruction Manual No.
GAE-138-00
Feb 2019

Unit Dimensions and
Components
5. “Unit Dimensions and Components”
on page 6.
Sensor Unit
Installation/Replacement
9-2. “Sensor Unit Installation
/Replacement”on page 41.
Base Unit installation/Wiring
6. “Installation and Wiring”on page 12.
Operation
7-1. “Operation”on page 19.
For checking normal operation, refer
to page 30.
Gas Alarm
7-2. “Operation - Gas Alarm”
on page 30. Flashing red LED
Trouble Alarm
7-3. “Operation - Trouble Alarm”
on pages 32.
Flashing
amber LED
Troubleshooting 10. “Troubleshooting”on page 46.
IN
OUT
Cable
entry

Table of Contents
1. Introduction..........................................................................................................- 1 -
1-1. Manuals and related documents ....................................................................- 1 -
1-2. Overview........................................................................................................- 2 -
2. General Precautions.............................................................................................- 3 -
3. Package Contents.................................................................................................- 4 -
4. Block Diagram ......................................................................................................- 5 -
5. Unit Dimensions and Components........................................................................- 6 -
5-1. Exterior Appearance.......................................................................................- 6 -
5-2. Main Unit........................................................................................................- 7 -
5-3. Base Unit .......................................................................................................- 8 -
5-4. DIP Switches..................................................................................................- 9 -
5-5. Operation Buttons........................................................................................- 10 -
5-6. LCD Indicator Icons......................................................................................- 11 -
6. Installation and Wiring.........................................................................................- 12 -
6-1. Wiring Procedure .........................................................................................- 13 -
6-1-1 Modbus TCP (Ethernet) Wiring Procedure.................................................- 15 -
6-1-2 Modbus RTU (RS-485) Wiring Procedure ..................................................- 15 -
6-2. Unit Installation Procedure ...........................................................................- 17 -
6-3. Tube Fitting Connection Procedure..............................................................- 18 -
7. Operation............................................................................................................- 19 -
7-1.Operation Procedure.....................................................................................- 19 -
7-2. Operation - Gas Alarm..................................................................................- 30 -
7-3. Operation - Trouble Alarm ............................................................................- 32 -
7-4. Operation - Test Mode..................................................................................- 34 -
7-5. Operation - Maintenance Mode....................................................................- 35 -
8. Maintenance.......................................................................................................- 37 -
9. Consumable Parts Replacement.........................................................................- 40 -
9-1. Filter Element Replacement.........................................................................- 40 -
9-2. Sensor Unit Installation/Replacement...........................................................- 41 -
9-3. Sampling Unit Replacement.........................................................................- 44 -
10. Troubleshooting ................................................................................................- 46 -
11. Specifications....................................................................................................- 48 -
12. Warranty...........................................................................................................- 50 -
13. Service Life of Detector.....................................................................................- 50 -
14. Disposal of Detector/Sensor/Sampling..............................................................- 50 -
15. Detection Principle............................................................................................- 51 -
15-1. Electrochemical Sensor (CDS-7)................................................................- 51 -
15-2. Hot-wire Semiconductor Sensor (CHS-7-CH).............................................- 51 -
15-3. Catalytic Sensor (CHS-7-CS).....................................................................- 51 -
15-4. Galvanic Cell Sensor for Oxygen detection (COS-7)..................................- 51 -
16. Glossary ...........................................................................................................- 52 -

- 1 -
1. Introduction
1-1. Manuals and related documents
The following documents are prepared for use of this product.
1. PS-7-M series gas detector’s instruction manual (This document, Doc.No.GAE-138-xx)
This document provides the following information to ensure safe use of this product.
Safety precautions
Installation and wiring
Basic configuration, block diagram, unit dimensions and components
Operation and mode setting
Maintenance, parts replacement, and action to take in the event of a failure
A manual is provided per system and not per unit.
2. PS-7 gas detector’s operation manual for administrators (Doc.No.GAE-019-xx)
This document is intended for your system administrator.
Password
Changing Settings
All the items set for this product (e.g. alarm set values) are password-protected.
A manual is provided per system and not per unit.
3. PS-7 pyrolyzer’s operation manual (Doc.No.GAE-020-xx)
This document describes installation and replacement procedure for a pyrolyzer (sold separately).
A manual is provided per system if the system includes a sensor unit with pyrolyzer.
4. PS-7-M communication specifications guide
This document provides communication specifications and the configuration procedure to
establish communication with external devices. This document is not included in a standard
package. If needed, please contact New Cosmos or its authorized representative to obtain it.
5. PS-7-M IP address setting guide
This document describes how to set/change an IP address by using a web browser to establish
communication with external devices. This document is not included in a standard package. If
needed, please contact New Cosmos or its authorized representative to obtain it.

- 2 -
1-2. Overview
Thank you for purchasing the New Cosmos PS-7-M series extractive pump gas detector. Prior
to use, please read this instruction manual to ensure safe and reliable operation.
This unit supports RS-485 and Ethernet communications. For information on Modbus interface
communication specs, please read the PS-7-M communication specifications guide.
This unit detects semiconductor process gas or combustible gas (e.g. hydrogen) that may be
present in a cylinder cabinet, exhaust duct, or industrial facility work environment (e.g.
semiconductor manufacturing plant), and relays the gas concentration value as an analog signal
and a RS-485 or Ethernet signal to an external device while simultaneously displaying the gas
concentration value on its display.
If gas concentrations reach a preset level, the red ALARM LED will start flashing and activate
relay contacts, thus monitoring the concentration of a leaked target gas.
Sensor and sampling units can be easily replaced without tools. After a sensor/sampling unit
replacement, on-site calibration using a prepared gas is not necessary.
Periodic maintenance is essential to maintain the reliability of your detector. Perform periodic
maintenance in accordance with the instructions given in this manual.
PS-7-M series gas detectors are divided into three models according to the sensor unit type and
with/without a pyrolyzer. For sensor selection, please contact New Cosmos or its authorized
representative.
Sensor unit (sold separately)
Model
Toxic gas sensor unit (CDS-7)
PS-7-M-01
Combustible gas sensor unit (CHS-7)
Oxygen (COS-7)
PS-7-M-02
Toxic gas sensor unit (CDS-7) with pyrolyzer (CDP-7)
PS-7-M-03
This product is CE-marked, but its RS-485 communication function is outside the scope of the CE
marking.
Modbus® is a registered trademark owned by Modicon Inc. (Schneider Automation international).
Symbols Used in this Instruction Manual
This manual uses Danger, Warning, Caution and Note symbols to draw attention to procedures,
materials, methods, and processes, which require particular attention.
DANGER
Indicates an imminently hazardous situation that can result in death
or serious injury.
WARNING
Indicates a potentially hazardous situation that may result in death
or serious injury.
CAUTION
Indicates a hazardous situation that may result in minor injury or
property damage.
NOTE
Provides information on product handling.

- 3 -
2. General Precautions
Carefully read this manual prior to use.
To ensure safe operation, follow the precautions below.
Wiring and installation should only be performed by a qualified electrician with knowledge of
wiring/installation procedures.
This product is not explosion-proof equipment and should not be installed in a
hazardous area.
Do not disassemble, modify, or alter the structure of this unit or its electrical circuits.
Doing so may compromise the performance of the product.
This product is not drip-proof equipment and should be kept away from splashing water.
Only use this product in accordance with applicable laws and regulations.
In the event of a gas leak alarm, follow safety procedures in accordance with your
company's regulations.
Ground the detector to prevent electric shocks.

- 4 -
3. Package Contents
The following items are included in a standard package. If any items are missing or
damaged, please contact New Cosmos or its authorized representative for replacement.
Table 1. Standard contents
Item Name
Qty.
Gas detector (PS-7-M)
1
Half union (male connector)
R1/4- ø6mm or R1/4- ø1/4 in. (selectable) *1
2
Replacement filter elements (FE-1, 12 pcs.) for MF-50 filter unit
1
Replacement fuse (1.0 A)
1 *2
Mounting screws (M48)
3
Outlet spacer
1
Mounting plate
1
Test stick
2 *3
Instruction manual (this document)
1 *4
PS-7 gas detector’s operation manual for administrators
(Doc.No.GAE-019-xx)
1 *4
PS-7 pyrolyzer’s operation manual (Doc.No.GAE-020-xx)
1*5
*1. Specified during order placement. Unspecified orders ship with R1/4- ø6 ㎜.
*2. Replacement fuse.
*3. Two pcs. per system.
*4. One pc. per system.
*5. One pc. is provided per system including a sensor unit with a pyrolyzer.
Note:Sensor units are sold separately, and not included in “Standard contents”.
Table 2. Optional items (sold separately)
Item Name
Qty.
Filter unit (MF-51)*6
As ordered.
Gas collector (PF-D1)
As ordered.
*6. Recommended when monitoring adsorbable gas (e.g. HCl, Cl2, NH3) other
than HF and F2.

- 5 -
4. Block Diagram
Max. load: 30 VDC 0.5 A (resistive load) for gas alarm contact (ZA1 or ZA2-ZC)
Max. load: 30 VDC 30mA (resistive load) for trouble alarm open collector output (TA-TC)
WARNING
Turn off the gas detector before starting wiring to prevent electric shocks.
Ground the gas detector to prevent electric shocks.
Ensure open collector output is connected (TA: + / TC: -). Due to the built-in protection
diode, incorrect polarities will cancel an active trouble alarm output.
CAUTION
The analog output line and power line of the gas detector are not isolated from each
other. When using with external devices, provide isolation to prevent noise from other
power lines from interfering with the analog output of the detector.
When wiring, place wires to avoid potential noise sources (e.g. large power transformers,
motors, and powers supply units).
Ensure cables between the gas detector and external devices are connected correctly.
Gas out
Rc 1/4
LCD
Maintennce
SW
P
Pump
Sensor
Flow
seneor
MF-50 (filter unit)
Gas in
Rc 1/4
GAS IN
Rc 1/4 Controller
F2
Power
24 VDC
TB2
1st stage alarm
2nd stage alarm
Common
Gas alarm contact output (N.O.)
PW
Jack
Earth terminal
+
-
TB1
FS
Sampling unit
P
N
G
H
E
TA
TC
TR
A
L
Membrane
SW panel
Analog output
4-20mADC
Trouble alarm open collector output
+
-
A
B
Trouble alarm
RJ-45
PoE power
Ethernet signal
RS485A
RS485B
G
ND
RS-485 signal
CPU board
Main unit
PW SW
PW
SW
COMM
board
+
-

- 6 -
5. Unit Dimensions and Components
5-1. Exterior Appearance
PS-7-M-01/02
PS-7-M-03
(Dimensions are in mm)
Item
Component
Description/Function
1
Main unit
Includes a display, a pump and a sensor.
2
Base unit
Thread cables thru the cable entry hole on the bottom of the base
unit and connect to the main unit
3
Filter unit (MF-50)
Incorporates a filter element (FE-1) that prevents dust from entering
the gas inlet and traveling into the sensor.
4
Inlet spacer
Prevents the filter unit from being over tightened.
5
Latch (2 places)
Latches secure the main unit to the base unit.
6
White line (2 places)
Indicates that the latch is in the lock position.
7
Pyrolyzer
Refer to “PS-7 pyrolyzer’s operation manual”(separate document).
8
DIP switches
Used for setting IP address/unit ID and communication mode.
Refer to 5-4. “DIP Switches”.
8
7
6
4
8
1
5
3
2
Mounting pitch:
Mounting pitch:

- 7 -
5-2. Main Unit
(Dimensions are in mm)
Item
Component
Description/Function
1
Green POWER LED
When lit, the unit is in normal operation mode
(gas-monitoring mode).
2
Amber TROUBLE LED
Flashing indicates an internal failure is present.
3
RedALARM LED
Flashing indicates a gas alarm is present.
4
LCD
Displays alarm notification, numeric gas concentration
value, gas concentration on bar graph, trouble status,
maintenance/test mode, and flow rate status.
5
Operation buttons (covered)
Setting/adjustment buttons and TEST switch.
6
Front cover
Gently pull out and slide down to access the operation
buttons.
7
Front panel
Incorporates a built-in main board.
8
Sampling unit
Incorporates a built-in pump unit.
9
Rear cover
Protects a built-in sensor unit.
10
Sensor unit
Remove the rear cover to remove/install a sensor unit.
1
2
3
4
5
7
6
8
10
9

- 8 -
5-3. Base Unit
Item
Component
Description/Function
1
Fuse
Internal circuit protection.
2
Base unit power switch
Turns on/off the base unit.
3
Mounting hole
φ5.5 mm
4
Terminal block (2 places)
Used for external wiring.
5
Main unit power switch
Turns on/off the main unit. Note: If the base unit power
switch is off, no power is supplied to the main unit.
6
Maintenance switch
Switches between the maintenance mode 1 (MNT1),
maintenance mode 2 (MNT2), and normal operation mode.
7
Pyrolyzer connector
Supplies power to a connected pyrolyzer (CDP-7).
8
Gas inlet
Thread size: Rc1/4
Filter unit (MF-50) is attached to this inlet.
9
Gas outlet
Thread size: Rc1/4
10
Grommet
Holds signal and power cables.
11
RJ-45 jack
Connect a LAN cable to the RJ-45 jack.
12
Terminal resistor switch
Turns on/off the terminal resistor.
Set the switch to the ON position to connect both ends of
the circuit. Refer to “PS-7-M communication specifications
guide” (separate document).
12
1
2
3
4
5
7
6
8
9
3
4
10
11

- 9 -
5-4. DIP Switches
Item
Component
Description/Function
1
IPAddress setting
switches
Set the IP address for this product.
Settable range: 1 (0000 0001) to 254 (1111 1110).
Modbus TCP (Ethernet): Set the 4th value of IP address. *1
Modbus RTU (RS-485): Set the unit ID.
2
IP address type
switch
Switches the IP address method between DY and ST.
DY: Dynamic IP address (DHCP)
ST: Static IP address
3
Mode change
switch
Switches the mode between Ethernet and RS485.
ETHERNET: MODBUS TCP
RS485: MODBUS RTU (RS-485)
4
Status LED-1/2/3
Indicates the unit and communication statuses.
1: When flashes, LAN cable is securely connected to RJ-45 jack.
2: When flashes, Ethernet and RS-485 communications are in
progress.
3: Communication status between the base and main unit.
- When flashes, communication is normal (sending and receiving)
- When steady, no response from the main unit.
- When not lit, no request from the base unit.
*1: When the IP address is “0 (0000 0000)”, the IP address can be changed by using a web browser.
1
2
4
3
Set the base unit power switch to the OFF position before using the DIP switches to avoid
incorrect operation or device failure.
Do not use IP address “255 (1111 1111)” because LAN Communication will be disabled if
that IP address is used.
Set the DIP switches in accordance with your selected communication method. Refer to
the PS-7-M communication specifications guide for details.
Ensure that each switch is clearly set to the 1/0, DY/ST, and Ethernet/RS485 positions.
Unclear setting may result in incorrect operation/communication.
The IP address settable range is 1 (0000 0001) to 254 (1111 1110).

When the IP address is “0 (0000 0000)”, it will be superseded by the IP
address set by a web browser.

IP address can be set to any value within the settable range, but if the same
address is used by more than one detector, the relevant detectors cannot
communicate.
The IP address settable range is 1 to 254.
NOTE

- 10 -
5-5. Operation Buttons
Item
Component
Panel
marking
Description/Function
1
SPAN button
(Span adj. button)
SPAN
Performs span adjustment. For O2 sensor unit
(COS-7), 21%vol adjustment will be performed.
2
ZERO button
(Zero adj. button)
ZERO
Performs zero adjustment for toxic/flammable
gas sensor unit (CDS-7/CHS-7)
3
AL button
(Alarm setting check button)
AL
Used to check the alarm set values.
4
COMM. button
COMM.
Imports data from a currently inserted sensor at
initial startup, etc.
5
UP and DOWN buttons
UP/DOW
N
Increase/decrease the parameter value.
6
Analog output check
connector
CP
Dedicated connector to check the unit’s 4-20
mA analog output.
7
TEST switch
TEST
Sets the unit to the test mode.
8
Button for administrator use
(Administrator use)
9
Communication connector
CN
(Unused)
1
2
3
4
5
6
7
8
9
Pull and slide down the front
cover to access the operation
buttons and TEST switch.
Opening front cover
Front cover
Slide down
Pull open

- 11 -
5-6. LCD Indicator Icons
Item
Icon/Display
Description/Function
1
Numeric display
Displays gas concentration and the unit of measurement.
E.g. %LEL, ppb, ppm
2
FLOW
Flow rate is low. Linked with item 6.
3
ALARM1 ALARM2
1st and 2nd stage gas alarms.
4
SENS.
A sensor fault (e.g. broken wire) is present or incorrect
sensor unit is inserted.
5
CONV.
Broken pyrolyzer wire.
6
Flow rate
Represents the flow rate of sampled gas.
- Spinning fast: Flow rate is normal. “FL500" indicated on
sub-display.
- Spinning slowly: Flowrate is reduced. Possible filter/tube
clogging. “FL400”or less indicated on sub-display.
- Stopped: Flow rate is too low. Low flow rate alarm.
“FL300”or less indicated on sub-display.
7
Gas concentration on bar
graph
One bar represents 5% of the full scale value. The bar
graph value increases from left to right with the far right
being full scale value.
8
Sub-display
Displays information on setting, flow rate, etc.
(Administrator use)
9
TEST mode
Unit is in test mode.
10
MNT1 / MNT2 mode
Unit is in maintenance mode 1 or 2.
1
2
4
6
9
10
8
3
5
7
LCD

- 12 -
6. Installation and Wiring
For detection of adsorptive gas (e.g. HF and F2), remove the filter element (FE-1) from
the filter unit (MF-50). Correct detection is not possible if the filter element is present.
Refer to 9-1. “Filter Element Replacement”.
Tubing should be Teflon, φ6/4, and less than 20m in length. For adsorptive gases
(e.g. HF, F2, HCl, Cl2, NH3), the tube length should be less than 5m.
Set the main unit power switch (located on the front of the base unit) to the OFF
position before installing/removing the main unit. Installation/removal while the main
unit power switch is in the ON position may cause a false alarm or device failure.

Install the gas detector in a place free from impact and vibration.
Do not install in the vicinity of equipment which can generate high frequencies or a
magnetic field.
Do not use a gas collector in a confined space (e.g. inside a duct).
Do not install the gas detector in a high temperature (higher than 40ºC) and
condensation-prone area. Avoid sudden temperature changes.
This product is not drip-proof equipment and should be kept away from splashing
water.
Do not block the cooling vents on both sides of the base unit.
The pressure differential between the gas inlet/outlet and the outside air pressure
(atmospheric pressure) should be within 1kPa. In addition, the pressure differential
between the gas inlet and the gas outlet should be within 1kPa, with negative
pressure applied to the gas inlet. Using the detector under overpressure will cause an
excess flow, which may result in flow rate error or incorrect measurement.
This unit is precision equipment. Stress or impact to the base unit should be avoided.
Install the gas detector vertically with its gas inlet and outlet facing down.
Determine the height for the tip of sampling tube by considering the specific gravity of
the target gas, and install the gas detector where gas is expected accumulate.
Gas type
Installing height
Gas heavier than air
Maximum of 30 cm above the floor
Gas near the specific gravity as air
75 to 150 cm above the floor
Gas lighter than air
Near the ceiling
This product is not explosion-proof equipment and should not be installed in a
hazardous area.

- 13 -
6-1. Wiring Procedure
The analog output line and power line of the gas detector are not isolated from each
other. When using the detector with external devices, provide isolation to prevent noise
from other power lines from interfering with the analog output of the detector.
When wiring, place wires to avoid potential noise sources (e.g. large power
transformers, motors, and powers supply units).
Ensure cables between the gas detector and external devices are connected correctly.
Gas alarm contact output is intended to be used with resistive loads only. If used with
inductive loads, high voltage surge will be generated resulting in damage to the device
or relay contacts.
Turn off the gas detector before fuse replacement.

Keep the connection cables (power and signal lines from the detector) away from other
power lines.
When wiring, place wires to avoid mechanical stress on the wiring.
Turn off the gas detector before wiring to prevent electric shocks.
Ensure open collector output is connected (TA: + / TC: -). Due to the built-in protection
diode, incorrect polarities will cancel an active trouble alarm output.
When installing the gas detector, ensure there is enough space
below/above the detector to allow for installation/removal/wiring activities.
(Recommended: More than 100mm above the unit and 150mm below the
unit.)
When installing more than one detector side by side, make sure to leave
enough space right and left to the gas detector to allow for
installation/removal of the main unit. (Recommended: More than 30mm
right and left to the unit.)
NOTE

- 14 -
Marking
on board
Polarity
Function *1
Recommended cable *2
P
+
Power input (24 VDC)
2-core CVV cable
N
-
G
+
Gas concentration output
(4-20 mADC)
3-core CVVS cable
H
-
E
Earth terminal
TA
+
Trouble alarm
(Open collector: N.C.)
Max. load: 30 VDC, 30mAresistive load
2-core CVV cable
TC
-
Trouble alarm, Common
A
+
Digital signal (RS-485)
2-core shielded twisted pair
cable
B
-
GND
ZA1
1st stage gas alarm contact output
(Dry N.O. contact)
Max. load: 30 VDC 0. 5A resistive load
3-core CVVS cable
ZA2
2nd stage gas alarm contact output
(Dry N.O. contact)
Max. load: 30 VDC 0. 5A resistive load
ZC
ZA1, ZA2 Common
*1.N.C. Normally Closed. N.O. Normally Open.
*2.Applicable cable: Dia. 8-11mm x 2pcs. Use appropriate cables for the installation environment.
Terminal layout
ZA1
ZA2
ZC
A
B
RS-485 signal
GND
Gas alarm
contact outputs
Trouble alarm
P
N
+
－
24 VDC input
入力
G
H
+
－
4-20mA output
E
(FG)
TA
TC
+
－
+
-
+
-
+
-

- 15 -
6-1-1 Modbus TCP (Ethernet) Wiring Procedure
Establishing Modbus TCP communication
When PoE-HUB is connected,
(1) Insert a LAN cable to the RJ-45 jack located at the bottom of the
base unit.
(2) Run a signal cable thru the grommet (located at the bottom of the base unit), and connect
the cable wires to their corresponding terminals (refer to “Terminal layout”on page 14).
When 24VDC power supply is used without a connected PoE-HUB
(1) Insert a LAN cable into the RJ-45 jack located at the bottom of the base unit.
(2) Run power and signal cables thru the grommet (located at the bottom of the base unit), and
connect the cable wires to their corresponding terminals (refer to “Terminal layout”on page 14).
6-1-2 Modbus RTU (RS-485) Wiring Procedure
Establishing Modbus RTU (RS-485) communication
When using the 24 VDC power supply, ensure that the power is 24 VDC 10%.
When using the PoE power supply, ensure that the LAN cable is securely connected.
Turn off the PoE before disconnecting the LAN cable from the
RJ-45 jack.
When using the 24 VDC power supply, ensure that the power supply is 24 VDC 10%.
Applicable cables: Dia.8-11mm x 2pcs. Use appropriate cables for the installation
environment.
Grommet
RJ-45 jack

- 16 -
(1) Run a power cable thru the grommet (located at
the bottom of the base unit), and connect the
cable wires to their corresponding terminals
(refer to “Terminal layout” on page 14).
(2) Run a RS-485 digital signal cable thru the
grommet (located at the bottom of the base unit),
and connect the cable wires to their
corresponding terminals (refer to “Terminal
layout” on page 14).

Use shielded twisted pair cable for RS-485 wiring. Cable length: Max.1.2 km
Single-point grounding (grounding at a single point) is mandatory. When the
cable shield from the gas detector is grounded on the power supply side, DO
NOT ground the shield cable to the Earth terminal located inside the gas
detector (on the terminal block for power cable) to avoid 2-point grounding..
Requirements for LAN cable
Use unshielded twisted pair (UTP) LAN cable, solid wire, category 5e or
higher.
Do not use a flat type twisted pair LAN cable.

If used in a place exposed to electrical noises, use a shielded twisted pair
(STP) cable for added resistance to external interference.
Cable length: Max.100 m
Refer to the separate PS-7-M communication specifications guide.
NOTE
Terminal
block for
signal
cable
Terminal
block for
power
cable

- 17 -
6-2. Unit Installation Procedure
1. Determine where to place the base unit (positioning). Secure the mounting plate to the wall
with the two mounting screws (M4x8).
2. Anchor the base unit to the mounting plate by inserting the mounting plate into the slot on
bottom of the base unit, and secure using the mounting screw (M4x8).
3. To install the sensor unit at this time, refer to 9-2. “Sensor Unit
Installation/Replacement”.
To install the sensor unit at later stage, move to step 4.
4. Ensure that the main unit power switch is in the OFF position.
5. To install the main unit, pull forward and hold both latches of the
base unit. Connect the main unit by sliding it onto the rails of the
base unit.
6. Push the base unit’s latches back into place so that the white
lines are visible, indicating the latches have been locked.
Ensure that the latches are in the fully locked position (white lines visible). Normal
detection is not possible if the latches are not fully locked.
Pitch
Mounting screw
Rail
Pull latches forward.
Fully push latch (lock position).
White line
Latch
Mounting screws
Mounting plate