USER MANUAL :
DOCUMENT NAME
1.8.3
Using the Digital Input
The input of the Cumulus Pulse logger is designed to connect to a volt free mechanical or electronic switch. The logger has
its own internal pullup resistor.
Example for connecting to a vo
Example for connecting to an Open Collector electronic switch
1.8.4
Using the 4-20mA loop input
The Cumulus Pulse logger is equipped with a fully isolated (optical) 4
applications and should be connected as below. Please take note of the polarity of the loop connections.
MANUAL : CDS541 CUMULUS PULSE LOGGER
NAME
CLASSIFICATION
DATE
PAGE
logger is designed to connect to a volt free mechanical or electronic switch. The logger has
Example for connecting to a volt free contact
Example for connecting to an Open Collector electronic switch - note that pin 18 must be the ground connection
20mA loop input and 24V loop power generator
logger is equipped with a fully isolated (optical) 4-20mA interface. This interface is configured for 2 wire
applications and should be connected as below. Please take note of the polarity of the loop connections.
PAGE
logger is designed to connect to a volt free mechanical or electronic switch. The logger has
note that pin 18 must be the ground connection
20mA interface. This interface is configured for 2 wire
applications and should be connected as below. Please take note of the polarity of the loop connections.
