Global Cache GC-SC1 User manual

Quick Start Guide
Global Caché
IT-SC1
Contact Closure Sensor
The Global Caché IT-SC1 is a contact closure sensor. Its circuitry provides a rapid
response to contact closure (4mS typ) with a slow response to contact opens (75mS
typ). This eliminates false triggers due to contact bounce created by mechanical
contacts coming together, such as push buttons or relays. The following illustrates a
typical push button installation along with the IT-SC1 response.
75 mS
4 mS
OPEN
CLOSED
5V
0V
Contact Closure
Sensor Output
IT-SC1 Output Diagram
The IT-SC1 plugs directly into the iTach WF2IR or IP2IR network adapter IR/Sensor
connector port. The iTach connector must be configured as a Sensor_IN or
Sensor_Notify. See the iTach Quick Start for more information. The IT-SC1 is
connected directly across the contacts, with the open/close state to be determined.
There is no polarity to the wiring. Below is a typical installation using the IT-SC1.
IT-SC1
iTach
iTach
Push
Button
Using the IT-SC1 to detect a push button
Quick Start Guide
Global Caché
GC-SC1
Contact Closure Sensor
The Global Caché IT-SC1 is a contact closure sensor. Its circuitry provides a rapid
response to contact closure (4mS typ) with a slow response to contact opens (75mS
typ). This eliminates false triggers due to contact bounce created by mechanical
contacts coming together, such as push buttons or relays. The following illustrates a
typical push button installation along with the IT-SC1 response.
75 mS
4 mS
OPEN
CLOSED
5V
0V
Contact Closure
Sensor Output
IT-SC1 Output Diagram
The IT-SC1 plugs directly into the iTach WF2IR or IP2IR network adapter IR/Sensor
connector port. The iTach connector must be configured as a Sensor_IN or
Sensor_Notify. See the iTach Quick Start for more information. The IT-SC1 is
connected directly across the contacts, with the open/close state to be determined.
There is no polarity to the wiring. Below is a typical installation using the IT-SC1.
IT-SC1
iTach
iTach
Push
Button
Using the IT-SC1 to detect a push button

The IT-SC1 requires +5V (supplied by the iTach) to operate and provides a logic level
output representing the contact closure state. The pin assignments are shown in the
diagram below.
Power
Sensor Output
Ground 6 ft. Cable
IT-SC1
Contact Closure
iTach
Specifications: Minimum Typical Maximum
Sensor output from contact CLOSE - 4.0 mS 6.0 mS
Sensor output from contact OPEN - 75 mS 90 mS
Steady-state current for contact CLOSE - 50 µA 75 µA
In-rush current at initial CLOSE - 1.5 mA 2.0 mA
Sensor output ON voltage @100µA Vcc – 0.1V - -
Sensor output OFF voltage @100µA - - 0.1V
Vcc, Supply Voltage 4.50V - 5.50V
Supply Current - 50µA 100µA
Global Caché, Inc.
160 East California Street, PO Box 1659
Jacksonville, Oregon 97530
Phone [phone]
Fax [phone]
www.globalcache.com
Support: [email protected] /Sales: [email protected]
Copyright ©2016 Global Caché, Inc. All rights reserved.
DN: 030916-01 ver 1/Information subject to change without notice.
The IT-SC1 requires +5V (supplied by the iTach) to operate and provides a logic level
output representing the contact closure state. The pin assignments are shown in the
diagram below.
Power
Sensor Output
Ground 6 ft. Cable
IT-SC1
Contact Closure
iTach
Specifications: Minimum Typical Maximum
Sensor output from contact CLOSE - 4.0 mS 6.0 mS
Sensor output from contact OPEN - 75 mS 90 mS
Steady-state current for contact CLOSE - 50 µA 75 µA
In-rush current at initial CLOSE - 1.5 mA 2.0 mA
Sensor output ON voltage @100µA Vcc – 0.1V - -
Sensor output OFF voltage @100µA - - 0.1V
Vcc, Supply Voltage 4.50V - 5.50V
Supply Current - 50µA 100µA
Global Caché, Inc.
160 East California Street, PO Box 1659
Jacksonville, Oregon 97530
Phone [phone]
Fax [phone]
www.globalcache.com
Support: [email protected] /Sales: [email protected]
Copyright ©2016 Global Caché, Inc. All rights reserved.
DN: 030916-01 ver 1/Information subject to change without notice.