9xx Family Including The 981 – 987 – *981S – 999
The 9xx family of controllers includes the 981, 987, *981S, and 999. The 981 is a single loop or channel controller with heat & cool outputs and ramp & soak profiling. The 987 is a single loop or channel controller with heat & cool outputs and ramp to set point. The *981S is a single loop or channel controller with heat & cool outputs, ramp & soak profiling, ramp to set point, compressor control and second user sensor input. It was used in many ESS, Inc. products but primarily in the RC900 controller from 1997 until the end of 2010. It is a custom hybrid controller made by combining software & hardware from the 987 and 981 controllers and adding additional custom functions & features. The model 999 is a dual loop or channel controller with two sets of heat/cool outputs. It was used in the RC999 controller for dual zone control applications such as thermal plates for TWT (traveling wave tube) testing.
Pdf Documentation
9xx family calibration manual Rev. A 247 KB
9xx family serial data communications manual Rev. B 738 KB
9xx family enhanced software features manual Rev. A 170 KB
96
The model 96 controller was used primarily in the T650 series thermal platform systems, the TC96 temperature controller and a few other misc. ESS, Inc. products up until 2010 when it was replaced by the PM6.
Pdf Documentation
*series 96 user’s manual Rev. G 1.77 MB
series 96/97 calibration manual 138 KB
sample series 96 16-bit Modbus packet 44 KB
series 96/97 field replaceable output modules 104 KB
series 96 manual set-up parameter values for T650/TC96 133 KB
*(Model 96 Controller PDF user’s manuals available in French, German & Spanish languages. Contact ESS Customer Service)
97
The model 97 is a UL listed FM (Factory Mutual) approved limit/alarm controller used in ESS, Inc. systems that required a redundant limit/alarm failsafe temperature controller such as SSTC thermal vacuum systems up until 2010 when it was replaced by the PM6L.
Pdf Documentation
series 97 user’s manual Rev. E 1.09 MB
series 96/97 calibration manual 138 KB
series 96/97 field replaceable output modules 104 KB
93
The model 93 temperature controller was used primarily in the early T650 series thermal platform systems. It was also used in a few other misc. ESS, Inc. products.
Pdf Documentation
model 93 user’s manual Rev. E 1.12 MB
94
The model 94 is a UL listed FM (Factory Mutual) approved limit/alarm controller used in early ESS, Inc. systems that required a redundant limit/alarm failsafe temperature controller such as SSTC thermal vacuum systems.
Pdf Documentation
model 94 user’s manual Rev. B 1.02 MB
935
The model 935 digital indicating temperature controller was used in some early custom applications primarily for its extremely compact 1/32 DIN mounting requirements
Pdf Documentation
model 935 user’s manual Rev. L 1.25 MB
965
The model 965 temperature controller was used primarily in the early T650 series thermal platform systems. It was also used in a few other misc. ESS, Inc. products.
Pdf Documentation
model 965 user’s manual Rev. C 443 KB
More
This document explains what PID, cascade control are and how to tune manually a controller
Series 96
Series 97 (limit-alarm controller )
Series RC 900, 982, 988, 999
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Series 988 User’s Manual, English (Rev AA)
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Serie 988 Benutzerhandbuch, Deutsch (Rev U )