OUMAN EH-203
OPTIONAL EQUIPMENT
OUMAN EH-203
42
LON-200
EH-485
MODBUS-200
LON-200 is an adapter card which makes the EH-200 series controllers'
serial communication bus compatible with the LON-200 field bus.
Installation and initialization instructions come with the LON-200 adapter
card.
Ouman EH-203 has an EH-485 bus adapter card as optional equipment
which makes the EH-203 controllers' serial communication bus compatible
with the RS-485 field bus.
MODBUS-200 is an adapter card which makes the EH-200 series
controllers' serial communication bus compatible with the RS-485 field bus.
The physical interface to the field bus is galvanically isolated RS-485
network.
PAN-200
The panel installation kit can be used to install the EH-203 controller to
e.g., the control cabin. The size of the installation hole is 222 mm x 138 mm.
EH-net
EH-203 can be remotely used (browser-based) in the Ethernet network
using an EH-net server. The EH-203 controller must have a modbus-200
adapter card to enable an EH-net connection.
EH-686
An input/output unit which contains relays, analog and digital inputs as
well as analog outputs. The unit makes it possible to carry out time
controlled relay functions, transfer alarms using digital inputs and make an
individual regulating circuit. EH-686 can also function as a master in the
OumanRS-485 bus by directing traffic in the net.
EMR-200
EH-203 has a plug connection for the energy meter read head. When a
district heating energy meter is connected to the EH-203 controller using
an EMR-200 energy meter read head, the district heating meter
measurement information can be read from the EH-203 controller. If the
controller has a GSM connection, the measurement information can be
received as a text message upon request and once a month automatically
to two selected GSM numbers.
GSM modem
A GSM modem makes if possible to communicate with EH-203 via text
messages. With browser-based remote use the alarms can be transmitted
as text messages to the GSM phone.
In floor heating solutions it is important to make sure that exessively hot
water which could damage structures or surfaces doesn't ever get into the
network. A mechanical thermostat should be installed on a supply water
pipe which stops the circulation pump in case of overheating. Set the
thermostat at 40 ... 45 C. Set the EH-203 regulator's maximum limit
b35 ... +40 C and the minimum limit b20 ... +25 C.
o
o
o
2
1
3
Pump
control
230 VAC
Pump
control
Surface mounted
thermostat CO1A
AC 250V 15 (2,5) A
C01A
Model
Set point
Differential
Temp. of
range
cover,
CO1A
+20...+90
7
-35...+120
range
°C
°C
o
C
