 The F4 Programmable Controller
features a four line, high definition LCD interface display that makes
manual operation, profile programming and controller configuration significantly
faster and easier. A large LED readout indicates the actual chamber temperature
with 0.1°C or °F display resolution. Internal logic provides
refrigeration compressor control based on the demand for cooling for
responsive and reliable performance.
The controller is packaged with a NEMA 4X front face to withstand harsh
environments. It is manufactured for TestEquity by Watlow and backed
by a three-year warranty.
Set Point Ramp and Soak Programming
The enhanced programming features found in the F4 controller are the
result of listening to our customers' demand for greater capabilities
with reduced programming complexity. Up to 256 steps can be programmed
into as many as 40 namable profiles. These profiles are easily entered,
stored and recalled using the controller's front panel keys, without
the need for a computer.
A profile guide leads you through the programming process by offering
choices for step configuration. For better operator recognition profiles
and digital I/O used for events can be given names of up to 10 characters
in length.
Five step types including ramp, soak, jump, auto start and end offer
you complete flexibility. Ramp steps can be based on time or rate. Ramp
and soak steps can be programmed to wait for up to four event inputs
and three process variables. Up to seven event outputs are step selectable.
Five sets of PID heat/cool parameters are also step selectable. The auto
start step can start a profile based on a set date, a day of the week,
or daily. The jump step can be used to jump within a profile or to another
profile.
Serial Communication
RS-232 and RS-485 serial communication interfaces are included. The baud
rate is selectable as either 9600 or 19200 baud. The controller uses
Modbus™ RTU protocol. Modbus™
enables a computer to read and write directly to registers containing
the controller's parameters.
RS-232C programming resources >>
Optional GPIB Interface (option 0003 or 1052)
Converts the controller's serial interface to GPIB.
More info about the GPIB interface and programming
resources >>
Optional Ethernet Interface (option 1055)
Converts the controller's serial interface to Ethernet. It is fully VXI-11.3
compliant so it fits in with todays new test equipment architectures
that use Ethernet networks. VXI-11 is a communication standard developed
by the VISA consortium in 1995 in conjunction with the VISA Specification.
VXI-11.3 is the sub-specification for network instruments.
More info about the Ethernet interface and programming
resources >>
Alarms
Two Form "C" electromechanical alarm relays are included. These
alarms can be programmed as either process or deviation alarms. The alarms
can be tied to up to three process variables. (The chamber also has an
independent High/Low Limit Controller with an audible alarm which is
used as a safety device.)
Optional Analog Retransmit
Analog retransmit capability is available to retransmit two variables.
These variables include chamber temperature, chamber humidity (model
1007H only), set point or percent control power. |
