Lake Shore Model 331 Temperature Controller User’s Manual
5. Remove and discard both existing fuses. Replace with proper Slow-Blow (time-delay) fuse ratings
as follows:
100/120 V
1.60 A T 250 V
5
×
20 mm
220/240 V
0.80 A T 250 V
5
×
20 mm
6. Re-assemble line input assembly in reverse order.
7. Verify voltage indicator in the line input assembly window.
8. Connect instrument power cord.
9. Turn power switch On (
l
).
8.4
REAR PANEL CONNECTOR DEFINITIONS
The Sensor Input, Heater Output, Relays and Analog Output, and RS-232 connectors are defined in
Figures 8-2 thru 8-5. For thermocouple connector details, refer to Figure 3-4.
I+
I
V
V+
!
C331-8-2.eps
Pin Symbol
Description
1 I–
–
Current
2 V–
–
Voltage
3
+1 mA – Model 330 Configuration
Shield – Model 340 Configuration
Refer to Paragraph 8.8 for jumper settings
that determine the output of this pin and to
Paragraph 3.5.1 for a general explanation.
4 V+
+
Voltage
5 I+
+
Current
6 None
Shield
Figure 8-2. Sensor INPUT A and B Connector Details
HEATER OUTPUT
HEATER OUTPUT
HI
HI
LO
LO
60V MAX
C-331-8-3.eps
Pin
Description
1
2
3
HI (Banana)
LO (Banana)
Ground (Banana)
Figure 8-3. HEATER OUTPUT Connector Details
Service
8-3
