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Siemens SIMATIC S7 Functional Safety Manual
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Fail
-
Safe signal module (S
M) applications
3.2
Digital output appli
cations
S7
-1200 Functional Safety Manual
Manual, 02/2015, A5E03470344
-
AA
77
3.2.5
Application 4: Wir
ing external contac
tors: Separate P an
d M
output chan
nels for
each contactor
3.2.6
Application 5: Sep
arate circuits of a rel
ay channel contr
olling external
contacto
rs
Redundant extern
al relays or cont
actors are controll
ed by indepe
ndent electric
al circuits that
are switched as a si
ngle process variabl
e channel.
①
External fuse
76
78
Table of Contents
Default Chapter
3
Preface
3
Table of Contents
7
Step
7
1 Product Overview
11
Overview
11
Hardware and Software Components
13
S7-1200 Fail-Safe Cpus
14
Behavior Differences between Standard and Fail-Safe Cpus
15
Safety Mode
15
Virtual Monitoring Number
15
Fault Reactions
16
Restart of Fail-Safe System
18
Firmware Update
18
S7-1200 Fail-Safe Signal Modules (SM)
19
Overview
19
SM 1226 F-DI 16 X 24 VDC
20
SM 1226 F-DQ 4 X 24 VDC
21
SM 1226 F-DQ 2 X Relay
23
2 Getting Started
25
Introduction to Example
25
Instructive, Interactive Animation Files
25
Requirements for Configuring and Programming
26
Example Structure and Task Definition
27
Procedure
28
Configuring
30
Introduction
30
Step 1: Configuring the S7-1200 CPU 1214FC or CPU 1215FC
31
Step 2: Configuring Fail-Safe CPU Standard Digital Inputs for User Acknowledgement, Feedback Circuit, and Start Pushbutton
34
Step 3: Configuring an SM1226 F-DI 16 X 24 VDC for Connecting an Emergency Stop Switch, Position Switches, and the Laser Scanner
35
Step 4: Configuring an SM 1226 F-DQ 4 X 24 VDC for Connecting a Motor
43
Summary: Configuring the Hardware
45
Programming
46
Introduction
46
Step 5: Specifying the Centralized Settings for the Safety Program
48
Step 6: Creating an F-FB
51
Step 7: Programming the Safety Door Function
52
Step 8: Programming the Emergency Stop Function
54
Step 9: Programming the Feedback Monitoring
56
Step 10: Programming the User Acknowledgment for Reintegration of the Fail-Safe SM
58
Step 11: Programming of the Main Safety Block
59
Step 12: Compiling the Safety Program
60
Step 13: Downloading the Complete Safety Program to the Fail-Safe CPU and Activating Safety Mode
61
3 Fail-Safe Signal Module (SM) Applications
65
Digital Input Applications
67
Selecting the Digital Input Application
68
Applications 1 and 2: 1Oo1 Evaluation of a Single Sensor
69
Applications 3 and 4: 1Oo2 Evaluation of a Single Sensor
70
Applications 5 and 6: 1Oo2 Evaluation of Independent Equivalent Sensors
71
Applications 7 and 8: 1Oo2 Evaluation of 3-Wire, Non-Equivalent Sensor Circuit
72
Applications 9 and 10: 1Oo2 Evaluation of 4-Wire Non-Equivalent Sensor Circuit
73
Digital Output Applications
74
Selecting the Digital Output Application
75
Application 1: Wiring a Directly-Connected SIL-Rated Actuator
75
Application 2: Wiring External Contactors: Separate P and M Controlled Contactors
76
Application 3: Wiring External Contactors: Parallel Connected between P and M
76
Application 4: Wiring External Contactors: Separate P and M Output Channels for each Contactor
77
Application 5: Separate Circuits of a Relay Channel Controlling External Contactors
77
Application 6: Wiring a Directly-Connected SIL-Rated Actuator
78
Application 7: Wiring a Directly-Connected SIL-Rated Actuator, Switching both Load Conductors
78
4 Fail-Safe CPU and Signal Module (SM) Installation
79
S7-1200 Fail-Safe Modules Installation and Removal
79
Mounting Dimensions for S7-1200 Fail-Safe Modules
79
Guidelines for Installing S7-1200 Fail-Safe Devices
80
Installation and Removal Safety Rules
83
Installing and Removing an S7-1200 FC CPU
85
Installing and Removing a Signal Module (SM)
87
Removing and Reinstalling the S7-1200 Terminal Block Connector
89
Fail-Safe System Electrical Design Rules
90
Safe Functional Extra Low Voltage Requirement (Power Supplies and Other System Components)
90
Power Budget
91
Connecting Power to the S7-1200 System
91
Calculating a Sample Power Requirement
94
Calculating Your Power Requirement
96
Fail-Safe Module Electrical Characteristics and Terminal Assignments
97
Terminal Assignments
97
Cpu 1214Fc
97
Cpu1215Fc
97
Control System Wiring Guidelines
98
Guidelines for Grounding and Wiring
98
Grounding an S7-1200 System
99
Wiring an S7-1200 System
100
Guidelines for Lamp Loads
101
Guidelines for Inductive Loads
101
Lamp Loads
101
Maintenance Guidelines
104
5 Fail-Safe Signal Module (SM) I/O Configuration
105
Configuring Fail-Safe SM I/O Properties
105
Configuring Common F-Parameters
106
Configuring SM 1226 F-DI 16 X 24 VDC DI and Channel Parameters
107
SM 1226 F-DI 16 X 24 VDC DI Parameters
107
SM 1226 F-DI 16 X 24 VDC Channel
108
Configuring SM 1226 F-DQ 4 X 24 VDC DQ and Channel Parameters
111
SM 1226 F-DQ 4 X 24 VDC DQ Parameters
111
SM 1226 F-DQ 4 X 24 VDC Channel
112
Configuring SM 1226 F-DQ 2 X Relay DQ and Channel Parameters
114
SM 1226 F-DQ 2 X Relay Channel Parameters
114
SM 1226 F-DQ 2 X Relay DQ Parameters
114
6 Fail-Safe Signal Module (SM) Diagnostics
115
Reactions to Faults
115
Fault Diagnostics
119
Diagnostics by LED Display
120
Fault Types, Causes, and Corrective Measures
125
Technical Specifications
131
General Technical Specifications
131
Standards Compliance
131
Fail-Safe Standards and Approvals
131
Profisafe Compatibility
131
General Certifications
132
Technical Specifications
132
A.1.4 General Certifications
132
Industrial Environments
135
Electromagnetic Compatibility
135
A.1.5 Industrial Environments
135
Surge Immunity
136
Wiring
136
A.1.7 Surge Immunity
136
Environmental Conditions
137
A.1.8 Environmental Conditions
137
Protection Class
138
Degree of Protection
138
A.1.9 Protection Class
138
Rated Voltages
139
A.1.11 Rated Voltages
139
Reverse Voltage Protection
140
DC Outputs
140
Relay Electrical Service Life
141
Internal CPU Memory Retention
142
Overvoltage Category III
143
A.1.16 Overvoltage Category III
143
Fail-Safe CPU Technical Specifications
144
Fail-Safe Additions/Exceptions
144
Areas of Application
144
Restrictions with "READ_DBL" and "WRIT_DBL
144
Restrictions to Configuring the Retentive Behavior of Data Blocks
144
Probabilities of Failure
144
Web Server
145
A.2.1.5 Web Server
145
Using a Memory Card with the S7-1200 Fail-Safe CPU
147
Cpu 1214Fc
149
General Specifications and Features
149
A.2.2 Cpu 1214Fc
149
Performance
151
Timers, Counters and Code Blocks Supported
151
A.2.2.2 Performance
151
Digital Inputs and Outputs
153
Analog Inputs
155
A.2.2.5 Analog Inputs
155
CPU 1214FC Wiring Diagrams
156
Cpu 1215Fc
160
General Specifications and Features
160
A.2.3 Cpu 1215Fc
160
Timers, Counters and Code Blocks Supported
161
Digital Inputs and Outputs
163
Analog Inputs and Outputs
165
CPU 1215FC Wiring Diagrams
168
Fail-Safe Signal Module (SM) Technical Specifications
171
Fail-Safe Signal Modules (SM)
171
SM 1226 F-DI 16 X 24 VDC
171
Properties
171
User Data Space
172
Specifications
172
Wiring Diagrams
175
Wiring Diagram
175
A.3.2.4 Wiring Diagrams
175
SM 1226 F-DQ 4 X 24 VDC
177
Properties
177
User Data Space
177
A.3.3.1 Properties
177
Specifications
178
A.3.3.3 Specifications
178
Fuse and Electronic Overload Protection
180
Switching of Loads
181
A.3.3.5 Switching of Loads
181
Wiring Diagrams
183
A.3.3.6 Wiring Diagrams
183
SM 1226 F-DQ 2 X Relay
184
Properties
184
User Data Space
184
A.3.4 SM 1226 F-DQ 2 X Relay
184
Specifications
185
A.3.4.3 Specifications
185
Relay Output Circuits
187
Switching Performance and Service Life of Contacts
188
Wiring Diagrams
190
A.3.4.6 Wiring Diagrams
190
Companion Products
192
PM1207 Power Module
192
A.4 Companion Products
192
Ordering Information
193
Fail-Safe Cpus
193
Fail-Safe Signal Modules (SM)
193
Other Modules
193
Fail-Safe Signal Modules
193
Spare Parts and Other Hardware
194
Terminal Block
194
Programming Software
195
B.5 Programming Software
195
Fail-Safe Response Times
197
Manual Update Note
197
Glossary
199
Index
207
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Configuration And Programming Manual
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Operating Instructions
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Product Information
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Equipment Manual
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Siemens SIMATIC S7 Specifications
General
Brand
Siemens
Model
SIMATIC S7
Category
Controller
Language
English
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