Honeywell Home resideo EW500 Series Installation And Setup Instructions page 7

Fig. 19
Fig. 20
Fig. 22
Fig. 23
4.8 Installation of the RS 232 module (module code: 003)
The RS 232 module requires an external power source.
It is galvanically isolated from the calculator using optical isolation.
The module can be powered by AC or DC voltage.
The power source is connected through terminals no. 97, 98, the polarity of
the connected power supply is arbitrary.
The communication cables are connected through the following terminals: 64
– signal ground, 63 – TxD module output, 64 – RxD module input (Fig. 25).
4.9 Installation of the RS 485 module (module code 003)
The RS 485 module requires an external power source.
It is galvanically isolated from the calculator using optical isolation.
The module can be powered by AC or DC voltage.
The power source is connected through terminals no. 97, 98, the polarity of
the connected power supply is arbitrary.
MU1H-0511GE23 R0720
Fig. 21
GB
The communication cables are connected through the following terminals: 86
– signal ground, 84 – A input/output (inverting), 85 – B input/output (non-
inverting) (Fig. 26).
4.10Installation of the impulse input/output module
There are two types of impulse I/O modules.
Modules can be powered, depending on the version, from the calculator or
external power source.
1. module with 2 impulse outputs (Fig. 27, module code: 016): impulse
outputs can operate in different classes: OB, OC and OD (according to
PN-EN 1434-2). Due to the high average power consumption is
recommended to use the module versions with external power supply.
In each case, the outputs are galvanically isolated from the calculator
2. module with 2 outputs + 2 impulse inputs (Fig. 28, module code: 080):
outputs for the I/O module are the same as for the 016 module. Inputs
can operate in IB or IC class (according to PN-EN 1434-2). In each
case, the inputs and outputs are galvanically isolated from the
calculator
The type and resolution of each impulse output can be freely configured. The
output generates impulses whose number is proportional to the increase in
energy or volume (main, additional or tariff), with one of three resolutions:
0.1, 1, 10.
The external power source is connected through terminals no. 97, 98, the
polarity of the connected power supply is arbitrary.
The impulse inputs are connected through terminals no. 65, 66 and 67, 68,
whereas the signal from the impulse outputs – through terminals no. 71, 72
and 73, 74.
4.11Installation of the 2 analogue output module (module
code: 256)
Analogue output module requires an external power supply and has a
galvanic isolation between the calculator and the module.
The module is available in three versions with two current outputs 0/4 ... 20
mA, two voltage outputs 1 ... 10 V or one current and one voltage output.
The analogue outputs can be freely configured to expose a condition
proportional to the instantaneous value of: the flow, power, power supply
temperature, return or temperature difference.
Analogue output status is updated at every determination of instantaneous
values, i.e. every 10 seconds for normal operation with non-zero flow.
Power is supplied to the module through terminals no. 97 and 98. Analogue
output terminals, depending on the version, are described as follows for a
specific version:
1. 2x voltage output (Fig. 29):
– output 1 – terminal 87, reference for output 1 – terminal 88,
– output 2 – terminal 89, reference for output 2 – terminal 90,
2. 2x current output (Fig. 30):
– output 1 positive terminal – 80, negative terminal – 81,
– output 2 positive terminal – 82, negative terminal – 83,
3. 1x current output + 1x voltage output (Fig. 31):
– output 1 (voltage output) – terminal 87, reference for output 1 –
terminal88,
– output 2 (current output) positive terminal – 82, negative terminal
– 83.
Note: If the module is powered from the calculator's power adapter, due to the maximum
load pf power adapter it is possible to install up to one analogue module.
4.12Installation of the LonWorks module
The LonWorks module (Fig. 32) requires an external power source. The
module can be supplied with direct current at a voltage range of 9-24 V.
Power source is connected by means of a pair of terminals located in the
upper right part of the module designated as B.
The positive terminal is marked as Vcc, whereas the negative pole – as GDN.
Communication cables are connected by means of a pair of terminals located
in the upper left part of the module designated as A – the polarity is arbitrary.
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