JULABO HT30-M1 High Temperature Circulator - Manual (Page 58)

Electrical connections
58
10. Electrical connections
Notice:
Use shielded cables only.
The shield of the connecting cable is electrically connected to the plug housing.
SERIAL
RS232/RS485 serial interface (30)
This port can be used to connect a computer with an RS232 or RS485
cable for remote control of the circulator.
Pin assignments RS232:
Pin 2 RxD Receive Data
Pin 3 TxD Transmit Data
Pin 5 0 V Signal GND
Pin 7 RTS Request to send
Pin 8 CTS Clear to send
Pin 1; 4; 6, 9 Reserved - do not use!
Pin assignments: RS485
Pin 3
A
Pin 5 0 VD Signal GND
Pin 8 B
Pins 1, 2, 4, 6, 7, 9 Reserved - do not use!
Accessories:
Order No. Description
8 980 073 RS232 interface cable 9-pol./9-pol. , 2,5 m
8 900 110 USB interface adapter cable
REG+E-PROG
Programmer input / temperature recorder output (31)
Analog inputs / outputs see page 50
Pin Signal
1 Voltage output Channel 1 0 ... 10 V
2 Voltage output Channel 2 0 ... 10 V
3 GND for outputs 0 V
4 Programmer input EPROG 0 to 10 V / 0 to 20 mA
5 Current output Channel 3 0 to 20 mA / 4 to 20 mA
6 GND for Progammer 0 V
ALARM
Alarm output (33)
(for external alarm signal)
This potential-free change-over contact is activated in case of an alarm
when pins 2 and 3 are connected.
Switching capacity max. 30 W / 40 VA
Switching voltage max. 125 V
∼/−
Switching current max. 1 A
9 6
5 1
1
2
3
4
5
6
1 3
2