P/N 133487
59
Banner Engineering Corp.
•
Minneapolis, U .S .A .
www .bannerengineering .com • Tel: 763 .544 .3164
Product Name
Instruction Manual
Operating Instructions
6.5 Reset Signal Requirements
Both manual (latch) reset and system reset signals can be
configured for monitored or non-monitored operation, as follows:
Monitored resets — Requires the reset signal to transition from
low (0V dc) to high (24V dc) and then back to low . The high
state duration must be 0 .3 to 2 seconds . This is said to be a
“trailing edge trip event .”
Non-monitored resets — Requires only that the reset signal
transitions from low (0V dc) to high (24V dc) and stays high for
at least 0 .3 seconds . After the reset, the reset signal can be
either high or low . This is said to be a “leading-edge trip event .”
6.3 Manual Reset
A manual reset operation is valid when all safety inputs mapped
to the safety output are in the Run state when the manual reset
is performed . See Section 6 .5 for reset timing requirements .
When a single manual reset device is mapped to two or more
safety outputs, one of which has an OFF-delay, then the manual
reset will not be able to turn ON
either safety output
until the
OFF-delay time has expired .
If a safety input device configured for manual reset changes from
the Run state to Stop and back to Run, then any safety outputs
to which that device is mapped will turn OFF and remain OFF
until a
valid
manual reset is performed .
6.4 System Resets and Lockout Conditions
A system reset is necessary under the following conditions:
• Recovering from a lockout condition
• Starting the Controller after a new configuration has been
downloaded
• Recovering from an output fault
• Entering Run mode after power-up, when configured for
manual power-up
• Exiting Enable mode
A system reset is used to clear lockout conditions not related
to safety inputs . A lockout condition is a response where the
Controller will turn OFF all affected safety outputs when a safety-
critical fault is detected . Recovery from this condition requires
all faults to be remedied and a system reset to be performed .
A lockout will recur after a system reset unless the fault that
caused the lockout has been corrected .
The 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); see Section 6 .5 for
reset timing requirements .
WARNING . . .
Checking Before Reset
When performing the system reset operation,
it is the user’s responsibility to make sure
that all potential hazards are clear and free of people
and unwanted materials (such as tools) that could be
exposed to the hazard . Failure to do so could result in
serious bodily injury or death.
WARNING . . .
System Switch
Location
The manual system reset push button must
be accessible only from outside, and in full view of, the
hazardous area. Reset switches must also be out of reach
from within the safeguarded space, and must be protected
against unauthorized or inadvertent operation (e .g ., through the
use of rings or guards) . If any areas are not visible from the reset
switch(es), additional means of safeguarding must be provided .
Failure to do so could result in serious bodily injury or death.
WARNING . . .
Non-Monitored Resets
If a non-monitored reset (either latch or system
reset) is configured and if all other conditions for a
reset are in place, a short from the Reset terminal to +24V will
turn ON the safety output(s) immediately.
