Honeywell Home resideo EW500 Series Installation And Setup Instructions page 6

Moreover, you can also connect the sensor communications and power
supply input:
9 - power supply output for the flow sensor (from the main power supply
source),
55 - signal input (only if it is configured as a input of digital communication
with the transducer) to communicate with the additional flow sensor
(additional input 2).
Please refer to the diagram below to connect the additional flow sensor with
the open collector output for the sensor with the required power supplied
from the calculator (1), open collector output (2) and the normally closed
contact output (3).
In the case of ultrasonic transducers with a 4-wire connection (e.g.
Sharky 473) the fourth wire (yellow) can be connected only if input I2
is configured as a digital communication with the transducer.
Otherwise, do not connect this cable. Incorrect connection may result
in premature battery wear.
4.4 Connecting external power supply
The calculator can be powered from 230VAC or 24VAC power adapter, as
well as using AA batteries, two AA or C batteries mounted on a separate
plate or D battery mounted directly in the base.
Opening the cover provides direct access to the main battery or power
adapter (Fig. 19).
If you are replacing the D battery on your own, pay attention to how it is
mounted in the casing, the positive pole should be facing the upper edge of
the casing.
Each battery or power adapter has cables to be connected to the calculator.
Main power supply must be connected on the terminal block (Fig. 12) to the
connector marked with numbers: 60 – positive pole, 61 – negative pole.
In case of calculator equipped with power supply: the power adapter should
be connected to the ~230 V power supply and to the terminals marked with
numbers 27 and 28 (Fig. 20); for the 24 V power adapter the ~24 V power
should be supplied to terminals marked with numbers 97, 98 (Fig. 21).
The power adapter has two sets of terminals marked with numbers 95 and
96, allowing for the supply of power to interchangeable communication
modules (terminals on modules marked with numbers 97 and 98).
The electrical connection of power adapter should be performed by a
properly licensed person.
4.5 Connecting additional input signals
Each version of the terminal block has 4 additional inputs.
Each of the inputs marked I1 (terminal no. 56 and 50), I2 (terminal no. 55 and
50), I3 (terminal no. 54 and 50), I4 (terminal no. 53 and 50) can operate as
an impulse input, the I3 input can additionally serve as an alarm input, and
the I4 input can be used for digital communication with the flow transducer.
Each input has two terminals, marked as follows:
• signal input (terminal no. 56, 55, 54, 53)
• reference input for additional input, each input has a separate terminal
for reference signal connection (terminal no. 50)
Fig. 22 shows the signal connection method for a sample additional input, for
a device with output type: open collector (1), normally open contact (2).
4.6 Installation of additional modules
The calculator allows you to install up to two independent additional modules:
GB
• M-Bus
• RS232
• RS485
• impulse outputs (2x OB, OC or OD class output)
• impulse inputs and outputs (2x OB, OC or OD class output and 2x IB or
IC class input)
• analogue outputs (2x 4-20 mA or 0-10 V output)
• LonWorks
• RF module for IMR telemetry systems (AIUT)
• Wireless M-Bus RF module
Fig. 23 shows the place and method of additional module installation.
Modules can be installed in any connector except for RF modules, which can
only be fitted in the connector marked with number 1 (Fig. 12).
4.7 Installation of the M-Bus module (module code: 001)
M-Bus module is powered from the M-Bus network and galvanically isolated
from the calculator using optical isolation. The module supports primary,
secondary and extended secondary addressing. The M-Bus signals are
connected through the inputs marked with numbers 24,25 (Fig. 24).
Fig. 12
Fig. 13
Fig. 14
Fig. 15
BROWN
WHITE
Fig. 17
6
BROWN
WHITE
BLUE
YELLOW
Fig. 16
RED
YELLOW
BLUE
Fig. 18
MU1H-0511GE23 R0720