Rev. 02-19 Page 23
USER MANUAL
TA INPUTS FOR MEASURING CURRENT ABSORPTION
On the electronics of the humidifier there are two inputs from an amperometric transformer, to
measure the current of the immersed electrodes:
TA1 (clamps 27 and 28):
For the connection of the TA, relative to the cylinder Nr 1
TA2 (clamps 29 and 30):
For the connection of the TA, relative to the cylinder Nr 2
NET CONFIGURATION WITH MODBUS-RTU PROTOCOL
To insert the humidifier in an RS485 network with Modbus-RTU protocol, set the parameter
MS = 0 (single humidifier operating mode), and follow the diagram below.
Refer to the MODBUS-RTU_UMIDMS03 manual (available on our website: www.pego.it) for
MODBUS-RTU communication protocol specifications.
BOARD POWER SUPPLY
The humidifier electronics require a 230Vac 50-60Hz ±10% power supply and have a maximum
consumption of 5VA (only electronic part).
Power supply (clamps 2 and 3):
230Vac 50-60Hz power supply.
NANO EASYSTEAM DISPLAY FOR MASTER HUM2 ELECTRONIC BOARD
The Master HUM2 electronics is the heart of the humidifier, which can be combined with a NANO
EasySTEAM display that allows the display of the machine status, programming and configuration
of the parameters. The connection between the display and the Master is made by a cable with an
8-pin RJ45 telephone connector with cross-over connection (supplied together with the display) to
be inserted in the two J1 references.
The combined use of Master and display is the most complete and recommended method but not the
only one possible; once configured, the Master HUM2 electronics does not require the presence of
the display and can be used independently. It is also provided with status LED (see chapter 3.2) and
a switch (jumper) for the manual emptying of the cylinder (see chapter 2.5). In this single mode, the
alarms are reset by removing power to the electronics.
2.7
2.9
2.10
B
A
2.8
