Inputs
Digital Inputs All Rievtech PLCs accept a some number of digital inputs. Digital inputs sense binary status, such as on/off, switch open/closed, etc.
Digital Input Sensors
The AC versions of the Micro PLC are suitable for operation with rated voltages between 110 V AC and 240 V AC. The DC versions can be operated with a 12 - 24 V DC power supply.
Push buttons Limit switches Proximity sensors Photo-electric sensors Level switches Pressure switches Auxiliary contacts of a contactors Relay/contactor contacts
Any connection to AC voltage more than 79 V AC is sensed as a ‘1’ (for AC versions) or DC voltage more than 10 V DC (for DC versions). Voltage below 40V AC (or 5V DC for DC versions) or an open connection is sensed as ‘0’.
The minimum time for a change in state of a digital input, is 50ms for the change to be detected (except high speed inputs which can operate up to 60 kHz).
Digital inputs include push-buttons, limit switches, relay contacts, proximity switches, photo sensors (On/Off), pressure switches and more. Digital input devices are available in both DC as well as AC and some are voltage independent such as a switch contact.
AC Input
Sinking DC Input
MIRCO PLC AC Version
MIRCO PLC DC Version
Common
Common
-
Input Sensing
Input Sensing
AC 110-240V
DC 12-24V
+
Input
Input
5
Made with FlippingBook - Online magazine maker