Banner SC22-3E Safety Controller with Ethernet - Manual (Page 33)

Manual Safety Input(s)
Latch Reset Input
(Monitored Reset Shown)
Cancel Delay Input
(Monitored Option Shown)
Safety Output
Status Output
(OK to Cancel OFF-Delay)
Off Delay
Started
Off Delay
Ended
Run
Stop
Run
Reset
Active
Inactive
ON
OFF
Off Delay
Normal End
Cancel Delay
Performed
Off Delay
Run
Reset
Latch Reset
Performed
Figure 13. Cancel OFF-Delay Timing: "Keep Output ON" function, manual (latch) Safety Input
Auto Safety Input(s)
Cancel Delay Input
(Monitored Option Shown)
Safety Output
Status Output
(OK to Cancel OFF-Delay)
Off Delay
Started
Off Delay
Ended
Run
Stop
Run
Reset
Active
Inactive
ON
OFF
Off Delay
Normal End
Cancel Delay
Performed
Off Delay
Figure 14. Cancel OFF-Delay Timing: "Keep Output ON" function, auto (trip) Safety Input
4.5 Input Device Resets
Three reset types are available:
• Manual Reset: used to manually reset a Safety Output that has turned OFF in response to a Stop signal from safety input device
configured for manual ("Latch mode") reset. The reset signal type can be configured to be either monitored or non-monitored (the
default setting is monitored).
• System Reset: used to recover from a fault condition or to restart the Controller after a new configuration has been altered. This
reset device (a button or switch) connects to a dedicated input terminal on the Safety Controller, labeled SR. The reset signal type
can be configured to be either monitored or non-monitored (the default setting is monitored).
• Automatic Reset: used to allow a Safety Output to return to an ON state without action by an individual once the input device
changes to the RUN state (provided that all other controlling inputs are also in the Run state). Also known as "Trip mode," automatic
reset is typically used in applications in which the individual continually is being sensed by the safety input device.
The reset switch must be mounted at a location that complies with the warning below. A key-actuated reset switch provides some
operator or supervisory control, as the key can be removed from the switch and taken into the guarded area. However, this does not
prevent unauthorized or inadvertent resets due to spare keys in the possession of others, or additional personnel entering the guarded
SC22-3/-3E Safety Controller Instruction Manual
P/N 133487 rev. C www.bannerengineering.com - tel: 763-544-3164 33