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ComTroll 230 can be supplied as a –m version where the LED’s for status messages,
open/close button and the ModeSwitch (Remote/Off/Local) are removed.
Each RTU-30 /RTU-30i has dedicated OPEN and CLOSE outputs with accompanying open and
closed limit-switch inputs to ensure reliable operation.
Details about the RTU-30 /RTU-30i functions and options can be found in separate
document.
Communication
RTU
30
RTU
30i
RTU
30i
Communication
Channel
Transceiver
I C
2
The ComTroll 230 Remote Terminal Unit can communicate with the central unit /SCADA on
different communication media. The most commonly used is low power radio and fiber-
optics, but the flexible communication platform can utilize almost any media using a
specified Transceiver module for the actual media used.
CRU-200 is a module comprising a modem and radio. Nortroll offers both VHF and UHF
radios with respectively frequency range 140-172 MHz and 406-460 MHz.
The ComTroll 230 with radio communication can be used as a repeater for other Nortroll
devices in the network.
Where other communication media is used, the radio is not mounted in the CRU-200. The
transceiver will in these cases normally be mounted outside the rack.
