Tapeswitch GS-120 Technical Manual page 59

Release 7/2009 Ver. 1.0
4.1 MONITOR INPUT
(Manual Reset Mode ONLY)
The SRUB interface unit provides a machine monitor
input. This monitor input receives a closed contact from
the machine's control circuit. Under normal conditions
this input will be closed at all times. If a fault occurs
external to the light curtain system, the machine's
control circuit must provide an open to this input. This
open contact must remain open until the external fault is
rectified. If the fault persists (input remains open) and
the light curtain system is cycled while obstructed, the
SRUB unit will not reset. Under this condition, all of the
LEDs will be off. The system will be capable of resetting
only after this monitor input is closed (machine/external
fault corrected). If this feature is not used, the most
common case, a jumper must be installed between X1
and X2 (when in the manual reset mode).
4.2 EXTERNAL RESET
(Manual Reset Mode ONLY)
In the manual reset mode, the SRUB Controller requires
an external reset switch.
normally-open, momentary-contact type. The location of
the reset switch must be such that any person resetting
the safety system must be able to completely see the
hazardous area. The system should not be able to be
reset if an operator is within the hazardous area, or if a
fault exists in the safety system and/or machine control
circuitry. The reset circuit of the SRUB Controller is
designed to protect against a failure (failed closed) or
by-pass of the reset button. The reset circuit requires a
closure and return to an open position. Replacing the
reset switch with a simple jumper will not convert the
SRUB Controller to automatic reset operation. (For
automatic reset operation, see the jumper configuration
in Figure 61.)
4.3 MONITOR/AUXILLARY OUTPUT
A non-safety monitor/auxiliary output is also provided.
This output is a normally-closed relay contact which is
open when both safety outputs are closed (light curtain
clear) and closed when both safety outputs are open
(light curtain obstructed). This output can be used for
display and status indication purposes. It must not be
used for safety-related machine control and switching
functions.
5.0 FUSES
The SRUB interface unit contains no user-accessible
fuses. It is recommended that the +24V DC supply
voltage be self-regulated and protected against any
possible faults or surges from the SRUB controller. It is
also recommended that external fuses be used to
prevent the safety output contacts from welding (as
described in section 4.1.1 of the main document).
TAPESWITCH CORPORATION
100 Schmitt Boulevard
Farmingdale, New York 11735
This switch should be a
Technical Manual: GS-120 Light Curtain Systems
6.0 TECHNICAL SPECIFICATIONS (SRUB)
Operating voltage
Power consumption
Contact configuration
Contact type
Operating temperature
Terminal/Housing style
Conductor connection
Max switching capacity
Switching voltage
Switching current
59
24 VDC at +/- 10%
approximately 5 VA
2 N/O safety contact,
1 N/C auxiliary contact
Relay positive guided
-25ºC to +50ºC
DIN 40050 (Terminal IP20)
(Housing IP40)
2
2 x 2.5mm solid wire DIN 26206
2
or 1 x 1.5mm stranded wire with
ferrule DIN 46228
1500 VA
250 VAC, 24 VDC Resistive load
6A AC, 6A DC
Phone: 631-630-0442
Fax: 631-630-0454
www.tapeswitch.com