Specifications
OWNER’S GUIDE CONDITIONERS, EPAD2/CPAD2 | 16401
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EPAD2 and CPAD2 Series
EPAD2 and CPAD2 overview
EPAD2 modules are external signal conditioning modules which connect to virtually any Dewetron system
via the RS485 interface, normally marked EPAD on your Dewetron system. It is marked this way on both
the DEWE-3210 and DEWE-3211 mainframes. However, EPAD2 series modules may also be connected to
any computer using a small interface box called the EPAD-BASE2, which allows you to connect one or more
EPAD2 modules to your computer’s RS232 or USB 2.0 interface.
CPAD2 modules are external modules which connect to any Dewetron system which has at least one CAN
BUS interface. Unlike EPAD2 series modules which employ the RS485 bus for communication and data
transfer, CPAD2 modules employ the CAN BUS for these functions.
Both EPAD2 and CPAD2 modules are 100% compatible with Dewetron software. The following pages will
show you how to connect and control these modules from within your system, as well as provide detailed
specications about these modules.
EPAD2 and CPAD2 modules are available for measuring voltage, current, and temperature. Each module
provides 8 inputs. They have a separate 24-bit ADC for each input channels, and provide galvanic isola-
tion to avoid ground loops and common mode problems. They can be daisy-chained to add more and more
channels to a single interface (CPAD2 and EPAD2 modules cannot be chained together).
EPAD2 and CPAD2 modules are not meant for dynamic/AC signals, but are intended for slowly changing
(quasi-static) and DC signals. They are the ideal way to add a moderate or even large number of slow chan-
nels to your Dewetron system in an affordable and convenient way.
Further technical details can be found within the xPAD technical reference manual, a separate document.
All specications within this manual are valid at 25 °C.
All modules are produced according to ISO9001 and ISO14001.