LAUDA Ultra-Thermostats
UB 20(-D), UB 25, UB 50, UB 30, UB 40
UB 20 F, UB 20 J, UB 30 J, UB 40 J, UB 65 J
UB 20 JL, UB 30 JL, UB 40 JL
YATE0013 / 10.04.02
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9.13.3 Connection potential-free contact "Combined fault" 12 N (Alarm off)
3-pin flange connector conforms to NAMUR recommendation NE 28
1 = n.o. (make)
2 = common
3 = n.c. (break)
1,2 are linked when unit operation is OK.
Use shielded connecting cables. Connect the shielding to the plug case. Cover the
unused connectors with protective caps!
Coupling socket 3-pin Cat.No. EQD 047
9.14 Serial interface RS 232 C
9-pin sub-D socket 53 S
9.14.1 Data of the RS 232 C interface
Cables used (computer end)
Computer Thermostat
25-pin 9-pin 9-pin
3 R x D 2 2 T x D (transmitted data)
2 T x D 3 3 R x D (received data)
7 SG 5 5 signal ground
6 DSR 6 6 DTR (data terminal ready)
4 RTS 7 7 CTS (clear to send)
5 CTS 8 8 RTS (request to send)
Use shielded connecting cables. Connect the shielding to the plug case. Cover the
unused connectors with protective caps!
Using this interface it is possible to transfer the following data from or to a computer with
a suitable interface:
1. Transfer of the setpoint from the computer to the thermostat
2. Read-out of the bath temperature T
i
, the external temperature T
1
, the external
temperature T
2
and the setpoint on the unit
3. Transfer of the low temperature and overtemperature switch-off point
4. Read-out of the set overtemperature and undertemperature switch-off point
5. Read-out of the fault signal
6. Transfer of the ramp segments and their processing
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