Chapter 8 Operation - 3216I Over Temperature Controller - Thermo Scientific STF55433 Installation And Operating Manual

1500°C Tube Furnace
Operation - 3216i Over
Temperature Controller
The 3216i controller serves as the Excess Temperature controller, when installed in the
unit, provides an additional, independent temperature control system to help protect
products from excess temperatures. The excess temperature controller is a single
setpoint controller, which provides a single digital display to indicate the setpoint
temperature (excess temperature Alarm threshold).
The Excess Temperature Alarm Threshold is typically set about 50°C (122°F) above the
operating temperature of the chamber to account for variance for the process value
temperature of the chamber. For example, Chamber temperature = 1500°C (2732°F)
then Excess Temperature Alarm Threshold = 1510°C (2750°F). The maximum allowable
Excess Temperature Alarm Threshold for this unit is 1550°C (2822°F) or +50°C (122°F)
from maximum rating of the chamber temperature.
Excess temperature controller features are OTP (Over temperature protection), sensor
break protection, and power failure indication.
NOTE *After turn on the unit & power failure, user must press PAGE button + SCROLL
button for the normal operation of the unit.
Table 4 Default settings for the Excess temperature controller (STF55433PBC-1,
STF55433PBCOMC-1)
Parameter Description
ALARM.1.Threshold Excess temp threshold 1550°C
ALARM.1.Hysteresis Alarm Hysteresis
INPUT.Units Display Units
INPUT.PVInValue PV Input Value
ACCESS.HomeDisplay Home Display
INPUT.PeakHigh Peak High
INPUT.PeakReset Peak Reset
INPUT.PVOffset PV Offset
Customer ID Customer ID
NOTE *Level 1+2 Read Only states that, Level 1 gives Read only access to user
where as Level 2 gives Write access along with Read access.
NOTE To enter Level 2 and Level 1 refer to the section "To Enter Level 2" .
Operation - 3216i Over Temperature Controller |
Level Access
1°C
°C
Displays Process
Value
Excess temp
threshold (1550°C)
Peak High PV value
Peak Reset
+/- adjusted with
respect to main
controller PV read-
ing
1500
Chapter 8
Level 1+2
Read/Write
Level 2 Read only
Level 1+2
Read/Write
Level 1+2 Read only
Level 1+2
Read/Write
Read only
Level 1+2
Read/Write
Level 1+2
Read/Write
Level 2 Read only
305435H03 | 8-71