6000 SERIES MANUAL_U.doc 12-12-07 25
Model 6010, Back view with CRSY102
REMOTE ALARM CONTACT: ALRM202
CARON’S accessory option, ALM-202, is a remote alarm contact for connection to an external
alarm or dialing system, to signal a temperature or humidity deviation from control safety settings.
The terminal block located on the back of the unit has both N/O and N/C contacts. In the event of
an alarm condition signaled by either the temperature or humidity controller, the N/O contract will
‘close’ and the N/C contact will ‘open’. Once the alarm condition is cleared, the contacts return to
their normal conditions. The diagram below shows the operating conditions for both connections:
Terminal Connection Unit off Normal Alarm
N/O to C
N/C to C
Closed
Open
Open
Close
Closed
Open
COMPUTER COMMUNICATIONS OPTION - SFTW102
The temperature and humidity controllers are equipped with RS-485 computer communications for
remote control or data logging. It is the customer’s responsibility to provide an RS-485
communications board or RS-485 to RS-232 converter for their PC and set up the system to
accept data from the controllers. CARON can provide information about the type of RS-485 board
and/or converter for your system. Terminations 11(R/T -), 12 (R/T +) and 13 (GND) located on the
back of the chamber are used to connect for communications.
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