7
Single Setpoint Models w/OTP
Alarms
24
Large Tabletop Muffle
Thermo Scientific
TM.CFG:
Timer configuration.
TM.RES:
Timer Resolution (minutes and hours).
THRES:
Timer start threshold (default is OFF).
END.T:
Timer End Type (default is DWELL).
Pid List
Pb:
Proportional band (in display units).
ti:
Integral time in seconds.
td:
Derivative time in seconds.
ACCESS List Code:
Access code (Code needed to enter or change the other configuration parameters
which are not normally accessible). Not accessible.
Alarms
The controller will flash an alarm message in the home display if an alarm condition is detected.
A2.HI:
Measured value full scale high alarm.
A1.DHI:
Measured value deviation high alarm.
S.br:
Sensor break: check that sensor is connected correctly.
LBR:
Loop break: check that the heating circuits are working properly.
Ld.F:
Heater Circuit fault: indication of either an open or short solid state relay, a blown fuse, missing
supply or open circuit heater.
Sensor Break Protection
This controller provides sensor break protection in the event the thermocouple opens. If an open
thermocouple condition occurs, the digital display will blink “S.br” and the power to the heating
element will be shut OFF (Cycle light on the display will extinguish).
Over – Temperature Protection (OTP)
The OTP will be in effect during any alarm condition when the temperature of the furnace has
deviated beyond the limit. The “Deviation High” alarm is the only alarm value, which can be changed.
To change it, press the SCROLL button until “1dHi” appears on the display. Press the UP or DOWN
button to select the OTP value you desire. We recommend a value of 20° above your working
temperature to provide protection for your workload.
In addition to over-temperature protection, units containing a single setpoint controller w/OTP
feature a mechanical OTP relay device, which disconnects power from the elements in an alarm
condition.
Summary of Contents for F30400
Page 6: ...Contents 4 Large Tabletop Muffle Thermo Scientific...
Page 10: ...1 Safety Information Warning 8 Large Tabletop Muffle Thermo Scientific...
Page 14: ...2 Introduction Principles of Operation 12 Large Tabletop Muffle Thermo Scientific...
Page 18: ...4 Unpacking 16 Large Tabletop Muffle Thermo Scientific...
Page 28: ...7 Single Setpoint Models w OTP Tuning 26 Large Tabletop Muffle Thermo Scientific...
Page 50: ...11 Furnace Loading 48 Large Tabletop Muffle Thermo Scientific...
Page 62: ...15 Replacement Parts List 60 Large Tabletop Muffle Thermo Scientific...
Page 64: ...16 Ordering Procedures 62 Large Tabletop Muffle Thermo Scientific...