Banner EZ-SCREEN Low-Profile Safety Light Curtain Systems - Manual (Page 45)

P/N 133487
43
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
Overview
P/N 140044 rev. E 43
Banner Engineering Corp. • Minneapolis, U.S.A.
www.bannerengineering.com • Tel: 763.544.3164
EZ-SCREEN LP
Instruction Manual System Operation
4.3 Reset Procedures
Resetting the System
System resets are typically performed using an external reset
switch. This switch must be located as discussed in Section
3.1.3.
If supervisory control of the reset switch is required, a key
switch may be used, with the key kept in the possession of a
Designated or Qualified Person. Using a key switch will also
provide some level of personal control, since the key may
be removed from the switch. This will hinder a reset while
the key is under the control of an individual, but must not be
relied upon solely to guard against accidental or unauthorized
reset. Spare keys in the possession of others or additional
personnel entering the safeguarded area unnoticed may create
a hazardous situation.
Emitter and Receiver Resets
The EZ-SCREEN LP receiver and emitter each have a Reset
input, pin 8 (Violet wire), that provides for a manual reset input
signal.
The receiver requires a manual reset to clear a Latch condition
and resume operation following a stop command. Internal
Lockout conditions also require a manual reset to return either
the emitter or the receiver to Run mode after the failure has
been corrected. Emitter resets are needed only in the unlikely
event that a Lockout occurs.
Receiver manual resets are required in the following
situations:
• Trip output operation – only after a Lockout (see Section 5
for causes).
• Latch output operation – at power-up, after each Latch
condition occurs, and after a Lockout.
Reset Routine
To reset the emitter and/or receiver, close the reset switch
for 1/4 to 2 seconds, then open it. (If reset switch model
MGA-KS0-1, listed in Section 2, is used, turn the key 1/4
turn clockwise to close; turn counterclockwise, back to its
original position, to open.) An alternate method to reset either
component is to power the sensor down, then power it up.
NOTE: Closing the reset switch too long will cause the sensor
to ignore the reset request; the switch must be closed
from 1/4 second to 2 seconds, but no longer.
Scan code is used to allow operation of multiple pairs of
emitters and receivers in close proximity (see Sections 3.1.8 and
1.4.4). Scan code may be set to 1 or 2, via DIP switch (see Table
4-1). The scan code setting for each emitter must agree with its
corresponding receiver. Scan code settings may be changed
while in Run mode without causing a Lockout.
Trip or latch output operation is selected on two DIP switches
in the receiver configuration port; see Figure 4-1. Both switches
must be set to the same setting. If they have different settings,
an error code will be displayed.
If the switches are set for trip output (T), the EZ-SCREEN LP will
auto-reset after a blocked condition. If the switches are set for
latch output (L), it will require a manual reset.
External Device Monitoring (EDM): EDM mode is selected
via a 2-position DIP switch on the receiver; see Figure 4-1. For
1-channel monitoring, set the EDM DIP switch to the 1-channel
EDM position. For 2-channel monitoring or no monitoring, set the
switch to the 2-channel EDM position (see Section 3.5.3).
Auxiliary Output: Determines whether the aux. output follows
the state of the OSSDs (ON = Green Status LED) or if the
sensor is in a lockout (ON = Fault).When 2-channel monitoring
(EDM) is selected, these aux. output options are not available
and this DIP switch setting has no effect (see Section 1.4.3).
Reduced Resolution: Enables or disables two-beam reduced
resolution (see Section 3.4.2), and is selected on two DIP
switches that must be set to the same setting.
NOTE: Enabling reduced resolution will affect the minimum
safety distance (see Section 3.1.1).
Inverted Display: Inverts the 7-segment display for right-reading
when sensors are mounted with the indicator end facing up. DIP
switch position OFF results in standard orientation.
Test/Reset: This emitter-only function is used to configure the
violet wire (pin 8) for either a Reset function (similar to the
receiver), or for a Test function which, when activated, simulates
a blocked condition for receiver testing purposes. See emitter
hookups, Figure 3-23.
NOTE: The emitter Test function can not be used in a color-for-
color (“swapable”) hookup.
Fault (Emitter): This emitter-only function is used to determine
whether the emitter Fault signal is active (+24V) when the
emitter locks out. Options are ON or OFF. If the color-for-color
(“swapable”) hookup is used and the receiver is configured for
2-channel EDM or OSSD follow, set this switch to OFF; if the
system is configured for OR fault function, set this switch to ON
(see Figure 3-22).