Installation Environment Section 3-1
3-1 Installation Environment
This section details the necessary environmental conditions for installing the
PC. Proper installation procedures and a proper environment are essential to getting the best performance and reliability from your PC.
!
Caution Static electricity can damage PC components. Your body can carry an electrostatic charge, especially when the humidity is low. Before touching the PC, be sure to first touch a grounded metallic object, such as a metal water pipe, in order to discharge any static build-up.
3-1-1 Installation and Wiring Precautions.
Ambient Conditions
Cooling
Clearance between Racks
Do not install the PC in any of the following locations. Doing so will affect PC life and may adversely affect operating performance.
• Locations subject to direct sunlight.
•
Locations subject to ambient temperatures lower than 0
°
C or higher than 55
°
C
(or higher than 45
°
C when using a Programming Console).
• Locations subject to ambient humidity lower than 35% or higher than 85%.
• Locations subject to condensation as the result of severe changes in temperature.
•
Locations subject to corrosive or flammable gases.
• Locations subject to dust (especially iron dust) or salts.
•
Locations subject to shock or vibration.
•
Locations subject to exposure to water, oil, or chemicals.
• Take appropriate and sufficient countermeasures when installing systems in the following locations.
•
Locations subject to static electricity or other forms of noise.
• Locations subject to strong electromagnetic fields.
• Locations subject to possible exposure to radioactivity.
•
Locations close to power supplies.
There are two points to consider in order to ensure that the PC does not overheat. The first is the clearance between the Racks, and the second is installation of a cooling fan.
The Racks need to have sufficient room between each other to allow for I/O wiring, and additional room to ensure that the I/O wiring does not hamper cooling.
The Racks must also be mounted so that the total length of the Connecting
Cable between all Racks in a given series does not exceed 12 m. As a general rule, about 70 to 120 mm should be left between any two Racks. Consider factors such as the width of the wiring duct, wiring length, ventilation, and ease of access to Units, when determining the spacing between Racks. Greater space is required between Racks when using certain CPU Bus and Special I/O Units.
Refer to the operation manuals for the Units you are using for details.
50
Installation Environment
Cooling Fan
Section 3-1
A cooling fan is not always necessary, but may be needed in some installations.
Try to avoid mounting the PC in a warm area or over a source of heat. A cooling fan is needed if the ambient temperature may become higher than that specified. If the PC is mounted in an enclosure, install a cooling fan, as shown in the following diagram, to maintain the ambient temperature within specifications.
Fan
PC
Louver
Noise Resistance Abide by the following precautions to help increase resistance to noise.
•
Do not mount the PC in a control panel containing high-voltage equipment.
•
Install the PC at least 200 mm from power lines.
• Ground the mounting plate between the PC and the mounting surface.
3-1-2 Installing Racks
The following figures show two views, each consisting of a mounted CPU Rack and two Expansion I/O Racks. Provide a space of 20 mm minimum on the upper and lower sides of each duct for ventilation and Unit replacement.
Example Duct Layout 118 to 153 mm
30 mm
40 mm
30 mm
CPU
Duct
30 mm
I/O
Duct
I/O
Each Rack must be mounted vertically, that is, with the printing on the front panels oriented as it would normally read. Racks may be mounted to any sturdy support meeting the environmental specifications.
Whenever possible, the Racks should be mounted to metal-plated mounting plate that are securely grounded. If all of the Racks cannot be mounted to the same mounting plate, the individual plates should be securely connected together using 3 wires of at least 2 mm
2
in cross-sectional area. The Backplanes are mounted to the plate(s) with four M4 screws each.
Whenever possible, use wiring conduit to hold the I/O wiring. Standard wiring conduit should be used, and it should be long enough to completely contain the
I/O wiring and keep it separated from other cables.
51
Installation Environment Section 3-1
Note Tighten the PC Rack mounting screws, terminal block screws, and cable screws to the torque of 1.2 N S m.
!
Caution Racks must be mounted horizontally so that the Units are upright (i.e., not upside down or lying on their backs). The Units can overhead and malfunction if not mounted properly.
I/O Connecting Cables Each I/O Connecting Cable can be up to 10 m long, but the sum total of all cables between the CPU Rack and Expansion I/O Racks must be 12 m or less.
The duct work shown in the following diagram is recommended to hold I/O wiring. Although optional, this duct work can be used to house the wires from the I/O
Units that run along the sides of the Racks, keeping the wires from becoming entangled. This figure illustrates the correct way to mount the Racks.
Input duct Output duct
200 mm min.
Power duct
CPU
Rack
Expansion
I/O Rack
Breakers, fuses
Power equipment such as transformers and magnetic relays
Fuses, relays, timers, etc. (NOT heat-generating equipment, power equipment, etc.)
Terminal blocks for PC
Terminal blocks for power equipment
Note When using the C200HW-PA209R Power Supply Unit at an ambient temperature exceeding 50
°
C, in order to improve air circulation, ensure that there is a
52
Installation Environment Section 3-1 gap of at least 80 mm between the top of the Power Supply Unit and the top of the panel, wiring ducts, parts, or any other structures.
80 mm min.
Ducts, etc.
C200HW-PA209R
80 mm min.
80 mm min.
Ducts, etc.
C200HW-PA209R
80 mm min.
Ducts, etc.
3-1-3 Mounting Height
The mounting height of CPU Racks, Expansion I/O Racks, or Slave Racks is
118 mm or 153 mm depending on the type of I/O Units mounted. If Peripheral
Devices or connection cables are attached, the additional dimensions must be taken into account. Allow sufficient clearance in the control panel in which the
PC is mounted.
118 to 153* mm
Approx. 180 to 223* mm
Note: Figures marked with an asterisk are for when the C200HW-PA209R is mounted.
53
Installation Environment
3-1-4 Mounting Dimensions (Units: mm)
Backplanes
A ± 0.2
Four, M4
130
CPU Backplane
7
118
±
0.2
Section 3-1
68 to 108 80 to 120
130 I/O Backplane
118 ± 0.2
6
Four, M4 W
Model
C200HW-BC031
C200HW-BC051
246 mm
316 mm
C200HW-BC081-V1 421 mm
C200HW-BC101-V1 491 mm
C200HW-BI031 175 mm
A
C200HW-BI051 245 mm
C200HW-BI081-V1 350 mm
C200HW-BI101-V1 420 mm
260 mm
330 mm
435 mm
505 mm
189 mm
259 mm
364 mm
434 mm
W
Note The C200HW-PA204R/PA209R cannot be used with all combinations of CPU
Units and Backplanes. Refer to page 23, Restrictions for the C200HW-PA204R/
PA209R , for details.
54
Installation Environment Section 3-1
Backplane Insulation Plates
If there is an electric potential difference between grounds when devices are wired separately, then use a Backplane Insulation Plate. There are four models available, corresponding to the number of slots in the Backplane. The dimensions at locations A, B, C, D, and E are shown below in millimeters for each Backplane Insulation Plate model.
135 (118) 110
M4 screws for mounting to PC
(4/5 places)
(B)
5-dia. holes for mounting
Base Insulation Plate
(4/6 places)
6
12 dia.
5 dia.
D
(A)
(E)
C
10
Insulation Plates for CPU Backplanes
For 3 slots
For 5 slots
For 8 slots
For 10 slots
Model
C200H-ATT31
C200H-ATT51
C200H-ATT81
C200H-ATTA1
E
261
331
436
506
Dimensions (mm)
D
210
C
---
B
---
280
385
455
---
---
---
---
227.5
270.5
A
246
316
421
491
Insulation Plates for CPU Backplanes
For 3 slots
For 5 slots
For 8 slots
For 10 slots
Model
E
C200HW-ATT32 190
C200HW-ATT52 260
C200HW-ATT82 365
C200HW-ATTA2 435
Dimensions (mm)
D
140
C
---
B
---
210
315
385
---
---
---
---
---
---
A
175
245
350
420
3-1-5 DIN Track Mounting
The PC may be mounted using DIN track if desired. This type of mounting is not required, and the PC may be directly mounted to any sturdy support meeting the environmental specifications (refer to Appendix B Specifications ). If you want to mount the PC on DIN track, you can order a DIN Track from OMRON (refer to
Appendix B Standard Models ). DIN Tracks come in the two heights shown below.
Note Never use DIN Track to mount Backplane in locations subject to vibration.
55
Installation Environment Section 3-1
DIN Track Mounting Bracket The DIN Track Mounting Bracket shown below is necessary for mounting the PC to the DIN Track.
DIN Track The following DIN Tracks are available.
Model
PFP-50N
PFP-100N
PFP-100N2
Specification
50 cm long, 7.3 mm high
1 m long, 7.3 mm high
1 m long, 16 mm high
Procedure
1, 2, 3...
1. The following diagram is a view of the back of the Backplane. Attach one
Mounting Bracket to the left and right sides of the Backplane as shown below.
Backplane
DIN Track Mounting
Bracket
There are two Backplane mounting screws each on the left and right sides of the Backplane. Use these screws to attach the DIN Track Mounting Brackets to the Backplane.
56
Installation Environment Section 3-1
2. Mount the Backplane to the DIN Track so that the claws on the Mounting
Brackets fit into the upper portion of the DIN Track as shown below.
This claw fits into the DIN Track
Backplane
DIN Track
DIN Track Mounting Bracket
3. Loosen the screws attaching the Mounting Brackets to the Backplane. Slide the Backplane upward as shown below so that the Mounting Bracket and
Backplane clamp securely onto the DIN Track. Tighten the screws.
DIN Track Mounting Bracket
DIN Track
Hold-down bracket
Projections
Slide this screw to the top of the projection and then tighten it.
57
Installation Environment Section 3-1
3-1-6 Mounting Units to the Backplane
The CPU Unit of the C200HX/C200HG/C200HE has no I/O points built in. In order to complete the PC it is necessary to mount at least one or more I/O Units to the Backplane. Mount the I/O Unit to the Backplane by locking the top of the
I/O Unit into the slot on the Backplane and rotating the I/O Unit downwards as shown in the following diagram.
Hook
Backplane
Lock lever
Press down on the yellow lock lever at the bottom of the slot, press the I/O Unit firmly into position, and then release the yellow lock lever, making sure the connector on the back of the Unit is properly connected.
58
(To remove a Unit, hold down the lock lever with an implement such as a screwdriver.)
Installation Environment Section 3-1
CPU Units, I/O Power Supply Units and Slave Units must have the screws on the bottom tightened with a Phillips screwdriver. The screwdriver must be held at a slight angle, so be sure to leave enough space below each Rack.
Duct
Phillips screwdriver
CPU Unit
I/O Power
Supply Unit
Remote
I/O Rack
Duct
20 mm min.
Backplane
20 mm min.
59
Installation Environment Section 3-1
3-1-7 I/O Connecting Cables
Each Rack must be mounted vertically, that is with the printing on the front panels oriented as it would normally be read. The Racks should be mounted one above the other with the CPU Rack uppermost as shown below.
The C200HX/HG/HE is approved by Underwriters Laboratories under the condition that, “The device must be mounted vertically for ventilation purposes.”
Connect the CPU Rack to the first Expansion I/O Rack with an I/O Connecting
Cable and then connect each Expansion I/O Rack in order, again using I/O Connecting Cables. Each I/O Connecting Cable can be up to 10 m long, but the sum total of all cables between the CPU Rack and Expansion I/O Racks must be 12 m or less.
Firmly connect the I/O Connecting Cables to the connectors on the Backplanes and tighten the connector screws. An I/O bus error will occur stopping PC operation if any of the I/O Connecting Cables is disconnected. Be sure to connect these Cables carefully and securely.
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This connector is not used.
Cover is with a cap.
I/O Connecting
Cable
A hole of 53 mm is diameter is required to pass the connectors on the I/O Connecting Cables through. This hole can be reduced to 33 mm by removing the hood from the connector, but be sure to reassemble the connector properly and securely, and secure it with the connector screws.
The pull strength of the Cables is 5 kg. Do not allow more than 5 kg of force to be applied to the Cables.
Note 1. The sum of the length of all I/O Connecting Cables in one PC must be 12 m or less.
2. Be careful to connect the Cables in the correct locations.
3. Always secure the I/O connection cables with the connector screws.
Installation Environment
3-1-8 Mounting Memory Cassettes
Use the following procedure to mount a Memory Cassette.
Section 3-1
!
Caution Be careful to always turn the power off before inserting or removing a Memory
Cassette. If a Memory Cassette is inserted into or removed from the CPU Unit with the power on, it may cause the CPU Unit to malfunction or cause damage to the memory.
1, 2, 3...
1. Open the Memory Cassette compartment cover.
2. Press the Memory Cassette firmly to the back to mount it.
3. Close the compartment cover.
61
Installation Environment
3-1-9 Mounting a Communications Board
Section 3-1
!
Caution Be careful to always turn the power off before inserting or removing a Communications Board. If a Communications Board is inserted into or removed from the
CPU Unit with the power on, it may cause the CPU Unit to malfunction, cause damage to the memory, or cause errors in communications.
1, 2, 3...
1. Open the Memory Cassette compartment cover.
2. Open the Communications Board compartment cover.
3. Slid the Communications Board in on the supports and press it firmly to the back of the compartment.
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