Electrical Connections - SCHOTT Instruments CT 52 Mode D'emploi

24. Electrical connections

RS 232 C
Electrical connections
Connection of circulator CK 300.
The circulator CK 300 is connected to pins 1 and 3. For the
connection use the shielded controlcable supplied with the circulator.
Circuit: Operation
Alarm
Pin assignment:
Pin 1: +24 V ( max. current 25 mA)
Pin 2: 0 V
Pin 3: Alarm relay
Pin 4: Reserved - do not use!
Pin 5: Cooling pulse
RS232C serial interface
This port can be used to connect a computer with an RS232C cable
for remote control of the circulator.
Pin assignments:
Pin 2 RxD
Pin 3 TxD
Pin 5 0 VD
Pin 6 DTR
Pin 7 RTS
Pin 8 CTS
Interface correspondence:
Circulator
(9-pole plug)
Pin 2 RxD
Pin 3 TxD
Pin 5 GND
Pin 6 DTR
Pin 7 RTS
Pin 8 CTS
Use shielded cables only.
= relay powered
= relay not powered
Receive Data
Transmit Data
Signal GND
Data terminal ready
Request to send
Clear to send
Computer
(25-pole connector)
Pin 2 TxD
Pin 3 RxD
Pin 7 GND
Pin 6 DSR
Pin 5 CTS
Pin 4 RTS