Table of Contents:
| Table of Contents |
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Page Status
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Date
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Initials
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Change
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June 23, 2021
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SG
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Engineering modes updated, and device set up parameters (and mode settings) spreadsheet now included.
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Introduction
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Relevant Devices
Description | Qty | Source | Part Number | IP Address Link |
|---|---|---|---|---|
Green CCD Cold Head | 1 | Instec | mK2000 | |
Red CCD Cold Head | 1 | Instec | mK2000 | |
Green LN2 Pump | 1 | Instec | LN2-SYS | N/A |
Red LN2 Pump | 1 | Instec | LN2-SYS | N/A |
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Action | Notes | |
|---|---|---|
| 1 | Read telemetry (Green) | Continuously running |
| 2 | Read telemetry (Red) | |
| 3 | Operational Mode: Cold (Green) | Operational mode of CCD temperature maintained at cold temperature set point. |
| 4 | Operational Mode: Cold (Red) | |
| 5 | Engineering Mode: Warm (Idle) (Green) | Engineering mode for idle case of warm CCD under no temperature control. |
| 6 | Engineering Mode: Warm (Idle) (Red) | |
| 7 | Engineering Mode: Cool Down (Green) | Engineering and maintenance only. Controlled ramp of cold head temperature from warm to cold. |
| 8 | Engineering Mode: Cool Down (Red) | |
| 9 | Engineering Mode: Warm Up (Green) | Engineering and maintenance only. Controlled ramp of cold head temperature from cold to warm. |
| 10 | Engineering Mode: Warm Up (Red) | |
| 11 | Engineering Mode: Set PID (Green) | Engineering and maintenance only. Uploads a PID parameter table to the device. |
| 12 | Engineering Mode: Set PID (Red) |
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Operational Modes
Link to Instec tab within KPF Operational and Engineering Modes Spreadsheet
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Setting | When Needed | Notes | ||||||
|---|---|---|---|---|---|---|---|---|
Green Channel Instec | ||||||||
Build | Observing | Maintenance | ||||||
Green PID Parameters | YES | NO | MAYBE | Instec app can save PID parameters to a .csv file. Likely convenient to use same format. Used with this command:
Verified with this command:
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Green Heating/cooling status | YES | NO | MAYBE | Values: 0=Heating Only, 1=Heating and Cooling, 2=Cooling Only Change between different modes with
command. | ||||
Green Cold Temperature Set Point | YES | NO | MAYBE | Temperature in degrees C. Used for the following commands:
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Green Warm Temperature Set Point | YES | NO | MAYBE | Temperature in degrees C. Used for the following commands:
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Green Cool-down Rate | YES | NO | MAYBE | Temperature change rate of degrees C per minute. Note this value is positive-only and the mK2000 infers the direction based on current and desired temperature. Used for the RAMP command:
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Green Warm-up Rate | YES | NO | MAYBE | Temperature change rate of degrees C per minute Note this value is positive-only and the mK2000 infers the direction based on current and desired temperature. Used for the RAMP command:
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Green Power Percentage Value | YES | NO | MAYBE | Power setting in percent. NOTE: the power percentage value on the Instec screen is in percent. However, power values passed through software are ratios. i.e., to set power to 5% the command would be:
and a following query
would return 0.050. Screen would say 5%. Suggest using ‘units’ of percent for this variable to match display screen; and have software convert it to a ratio behind the scenes for commanding the Instec. | ||||
Red Channel Instec | ||||||||
Build | Observing | Maintenance | ||||||
Red PID Parameters | YES | NO | MAYBE | See notes above for Green counterpart. | ||||
Red Heating/cooling status | YES | NO | MAYBE | See notes above for Green counterpart. | ||||
Red Cold Temperature Set Point | YES | NO | MAYBE | Temperature in degrees C. See notes above for Green counterpart. | ||||
Red Warm Temperature Set Point | YES | NO | MAYBE | Temperature in degrees C. See notes above for Green counterpart. | ||||
Red Cool-down Rate | YES | NO | MAYBE | Temperature change rate of degrees C per minute. See notes above for Green counterpart. | ||||
Red Warm-up Rate | YES | NO | MAYBE | Temperature change rate of degrees C per minute See notes above for Green counterpart. | ||||
Red Power Percentage Value | YES | NO | MAYBE | Power setting in percent. See notes above for Green counterpart. | ||||
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Parameter | Threshold | Notes | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | Cold Head Temperature Value Low (Green) |
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| 2 | Cold Head Temperature Value High (Green) |
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| 3 | Cold Head Temperature Value Low (Red) |
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| 4 | Cold Head Temperature Value High (Red) |
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Relevant Datasheets & Manuals
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