Lakeshore 336, User Manual

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1.3.4 Control 9
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1.3.4 Control There are 4 control outputs.
1.3.4.1 Heater Outputs (Outputs 1 and 2)
Control type Closed loop digital PID with manual heater output or open loop
Update rate 10/s
Tuning Autotune (one loop at a time), PID, PID zones
Control stability Sensor dependent, see Input Specifications table
PID control settings
Proportional (gain) 0 to 1000 with 0.1 setting resolution
Integral (reset) 1 to 1000 (1000/s) with 0.1 setting resolution
Derivative (rate) 1 to 200% with 1% resolution
Manual output 0 to 100% with 0.01% setting resolution
Zone control 10 temperature zones with P, I, D, manual heater out,
heater range, control channel, ramp rate
Setpoint rampin 0.1 K/min to 100 K/min
25
)
setting 50
)
setting
Type Variable DC current source
D/A resolution 16-bit
Max power 100 W 50 W
Max current 2 A 1 A
Compliance voltage 50 V 50 V
Heater load for max power 25
)
50
)
Heater load range 10
)
to 100
)
Ranges 3 (decade steps in power)
Heater noise 0.12 µA RMS (dominated by line frequency and its harmonics)
Grounding Output referenced to chassis ground
Heater connector Dual banana
Safety limits Curve temperature, power up heater off, short circuit protection
TABLE 1-7 Output 1
25
)
setting 50
)
setting
Type Variable DC current source
D/A resolution 16-bit
Max power 50 W 50 W
Max current 1.41 A 1 A
Compliance voltage 35.4 V 50 V
Heater load for max power 25
)
50
)
Heater load range 10
)
to 100
)
Ranges 3 (decade steps in power)
Heater noise 0.12 µA RMS (dominated by line frequency and its harmonics)
Grounding Output referenced to chassis ground
Heater connector Dual banana
Safety limits Curve temperature, power up heater off, short circuit protection
TABLE 1-8 Output 2