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4.6.2 Two-Hand Control (THC)
The two-hand control function requires that two hand actuators (e.g., hand/palm buttons) each be activated within 0.5 seconds of each
other in order to produce a Run signal to start a machine cycle. THC devices are always the last input (in time) to turn the Safety Output
ON. If one or more of the other controlling input devices are configured for manual reset and are used to stop the machine, a manual
reset must be performed before the THC device can cycle the machine again.
See section 10.5 Two-Hand Control on page 100 for more information.
Two-Hand
Control Device
Safety Device 2
(Manual Reset)
Reset Signal
Safety Output
Figure 17. Timing logic: two-hand control device and manual reset safety input device
Two-Hand Control Activation on Power-Up Protection. The Controller’s two-hand control logic will not permit the assigned Safety
Output to turn ON when power is initially supplied while the THC actuators are in their Run state. The THC actuators must change to their
Stop state and return to the Run state before the Safety Output can turn ON.
A two-hand control device does not have a manual reset option.
4.6.3 Enabling Devices
The enabling device actively controls the suspension of a Stop signal during a portion of a machine operation where a hazard can occur.
The enabling device permits a hazardous portion of the machine to run, but must not start it. A separate machine command signal from
another device is needed to start hazardous motion. This enabling device must have ultimate hazard turn OFF or Stop authority
when being used. The enabling device is sometimes referred to as the “live man pendant.”
An enabling device can be mapped to one or more Safety Outputs. When the enable signal goes from the Stop state to the Run state, the
Controller will go into Enable mode. In this mode, the associated Safety Outputs will turn ON if any of the assigned EDM inputs are
closed (these may open after the outputs turn ON) and all of the controlling E-stop or rope pull devices are in their Run state. With the
exception of the E-stop and rope pull devices, all other safety input signals (Run or Stop) will be ignored while the Controller is in Enable
mode. Safety Output enabling control resides in the enabling device function when in Enable mode. Repetitive enable cycles are allowed.
In order to exit Enable mode, the enabling device must be in the OFF state, and a system reset must be performed.
Enabling Device Time Limit. The enabling device time limit can be adjusted between 1 second and 30 minutes and cannot be disabled.
When the time limit expires, the associated Safety Outputs will turn OFF. In order to start a new Enable mode cycle with the time limit
reset set to its original time limit value, the enabling device must switch from ON to OFF, and back to ON.
All ON- and OFF-delay times associated with the Safety Outputs that are controlled by the enabling device function will be honored
during the Enable mode.
SC22-3/-3E Safety Controller Instruction Manual
36 www.bannerengineering.com - tel: 763-544-3164 P/N 133487 rev. C
- Original Instructions 1
- Contents 2
- Contents 3
- 4 P/N 133487 rev. C 4
- Contents 5
- 1 About This Document 6
- 1.3 Standards and Regulations 7
- 1.4 Contact Us 8
- 2 Overview 9
- 2.1 Ethernet-Compatible Model 9
- 2.2 Applications 10
- 2.3 Design and Testing 10
- 2.4 Components 10
- 2.4.2 USB Connections 11
- 2.4.3 Ethernet Connections 11
- 2.4.4 SC-XMP Programming Tool 11
- 2.5.1 Onboard Interface (OBI) 12
- Accessing Fault Codes 14
- PCI Software Compatibility 15
- 2.6.2 Safety Outputs 16
- 2.6.3 Status Outputs 17
- 2.6.4 Virtual Status Outputs 17
- 2.7 System Settings 18
- 2.8 Internal Logic 19
- 2.9 Password Overview 20
- 3.3 Ethernet Cordsets 22
- 3.4 Interface Modules 22
- 3.5 Specifications 23
- 3.5.1 Dimensions 25
- 4 System Installation 26
- 4.1 Appropriate Application 26
- 4.3 Safety Input Devices 27
- SO1 SO2 SO3 28
- S = Simultaneous 29
- C = Concurrent 29
- Signal Change-of-State Types 30
- Signal Debounce Times 30
- 4.4 Non-Safety Input Devices 31
- 4.5 Input Device Resets 33
- 4.6 Safety Input Function 35
- 4.6.2 Two-Hand Control (THC) 36
- 4.6.3 Enabling Devices 36
- 4.6.4 Mute Function 37
- 4.6.5 Bypass Function 38
- 4.7.2 Safety Outputs 41
- Safety Input 42
- (ON-Delay) 42
- (OFF-Delay) 42
- (To SO 1A) 46
- (To SO 1B) 46
- 1A 1B 2A 2B 3A 3B A2 47
- 4.8 Status Outputs 50
- 4.9 Virtual Status Outputs 52
- 4.10 Commissioning Checkout 52
- 5.1.1 Configuration Tools 53
- 5.1.2 Build a Configuration 54
- Create a New Configuration 55
- Add an Input Device 55
- Finish the Configuration 57
- System Reset 59
- 5.1.4 Other Functions 60
- Export Documents 61
- Print Options 61
- Run Mode 63
- Configuration 63
- 6.2 Run Mode 64
- 6.3 Configuration Mode 64
- 6.3.3 Confirm Configuration 65
- 6.4 Edit Configuration 66
- 6.4.3 Outputs/System Settings 67
- 6.5 Add an Input 68
- 7.3.1 Run Mode Screen—OBI 72
- 7.4 Manual Reset 73
- 7.6 Reset Signal Requirements 74
- 8 System Checkout 75
- W1 W2 W3 W4 80
- 9.1 Cleaning 82
- 9 Troubleshooting 82
- 9.4 Recovering from a Lockout 86
- 9.5.1 Fault Log—PCI 87
- 9.5.2 Fault Log Recording—PCI 87
- 9.6.1 View Current Faults—OBI 88
- Device Name 89
- Fault Description 89
- Time Since Fault 89
- Fault Code 89
- Principles 90
- OFFON OFFON 91
- 10.2 Protective (Safety) Stop 92
- OpenOpen 95
- Open Open Open 96
- 24V 24V 24V 97
- 10.4 Optical Sensor 98
- 10.5 Two-Hand Control 100
- 10.6 Safety Mats 103
- Emergency Stop Hookup Options 108
- Category 2 E-Stop Circuit 108
- Category 3 E-Stop Circuit 108
- Category 4 E-Stop Circuit 108
- 10.8 Rope/Cable Pull 109
- S1 S2 S1 S2 111
- 10.9 Enabling Device 112
- ONOFF ONOFF 114
- Lockout/Tagout 115
- 10.11 Mute Sensor Pair 116
- Mute Device Requirements 117
- Inductive Proximity Sensors: 118
- 10.11.4 Mute Enable (ME) 119
- 10.11.5 Mute Lamp Output (ML) 119
- 10.11.7 Mute on Power-Up 120
- < 3s< 3s 122
- < 3s< 3s < 3s< 3s 123
- 11 Ethernet Reference 124
- 11.1 Ethernet Setting Access 124
- 11.3 Support Files 125
- Reserved 127
- 12 Glossary 128
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