Lake Shore 350, Руководство пользователя

Страница: 23 / 192

1.6.4 Control 9
|
www.lakeshore.com
1.6.4 Control There are 4 control outputs.
1.6.4.1 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 9999 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 ramping 0.001 K/min to 100 K/min
Output 1
25
)
setting 50
)
setting
Type Variable DC current source
D/A resolution 16-bit
Max power 75 W 50 W
Max current 1.732 A 1 A
Compliance voltage (min) 50 V 50 V
Heater load for max power 25
)
50
)
Heater load range 10
)
to 100
)
Ranges 5 (decade steps in power)
Heater noise 1.2 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
Output 2
25
)
setting 50
)
setting
Type Variable DC current source
D/A resolution 16-bit
Max power 1 W
Max current 100 mA
Voltage compliance (min) 10 V
Heater load for max power 100
)
Heater load range 25
)
to 2k
)
Ranges (100
)
load) 1 W, 100 mW, 10 mW, 1 mW, 100 µW
Heater noise <0.005% of range
Grounding Output referenced to measurement common
Heater connector Dual banana
Safety limits Curve temperature, power up heater off, short circuit protection
TABLE 1-5
TABLE 1-6