HYDROMETER GmbH
Industriestraße 13 · 91522 Ansbach · T49 (981) 18 06 - 0 · T49 (981) 18 06 – 615
Am Weimarer Berg 3 · 99510 Apolda/Thüringen · T49 (3644) 84 33 - 0 · T49 (3644) 84 33 - 411
[email protected] · www.hydrometer.de · Subject to technical adjustments · 12.05.2011
2
Electrical Connections
Important Note:
In the case of connecting LAN- and M-Bus cables over long distances or
between buildings we recommend the interconnection of a lightning
arrester. We qualified the following types:
-
for M-Bus connections: Dehn BD48
-
for LAN connections: Dehn DPA MCA T6RJ45 S48
When connecting M-Bus devices to the IZAR CENTER, you do not have to
interrupt power supply
Number Description
16 110..230 V AC
5,6 Protective earth
29,31,33 M-Bus
30,32,34 M-Bus output -
1 M-Bus Repeater input
2 M-Bus Repeater input
68 Connector for LAN
66 Connector for USB
67 Connector Mini DIN (8 pol.) for connecting PC, Modem (RS232 interface)
20 Sticker with serial number and MAC Adress
65 Black hook
Power supply:
110 ... 230 V AC (16), Euro-Norm shock-proof plug.
Protective Earth:
Connect clamp 5 or 6 to a protective earth potential.
Important Note:
Protective earth must be connected to IZAR CENTER.
M-Bus Devices:
M-Bus devices are connected to the M-Bus clamps (see table). The M-Bus is
polarity independent, but you have to use one + and one - output for each
branch of the M-Bus network. All M-Bus outputs are parallel.
Repeater:
If you want to use the IZAR CENTER device as M-Bus repeater, connect the
M-Bus output of another IZAR CENTER to clamp 1 and 2.
Modem, PC:
Connect a modem to connector 67. Use the interface cable provided with your
modem (maximum cable length: 10 m).
USB:
Maximum cable length 3 m. Use the provided USB cable.
Display
The IZAR CENTER device has got a total of 5 display lights:
M-Bus:
Indication for 0 ... 100 % M-Bus load (green), 100 ...130 % M-Bus load
(yellow, warning) and overload (red). If the yellow LED is lit up the maximum
M-Bus load is reached. Do not connect any more M-Bus devices. In this state
the IZAR CENTER has still full functionality. The red light signals an M-Bus
overload. An overload occurs if there are too many M-Bus devices connected
to the bus or if the bus lines are shortened. In this case the IZAR CENTER
switches the M-Bus for approx. 2 seconds off. After that the bus load is tested
and the bus is switched off again if the overload condition remains.
Communication:
The IZAR CENTER has got four different input channels: USB, LAN, RS232,
Repeater. A green lightning next to USB/LAN resp. RS232/Repeater shows
an established USB resp. RS232 connection. A yellow lightning shows an
established LAN resp. Repeater connection. A green lightning next to Rx/Tx
