Specifications
A-12
Appendix 5
535-PROF User's Manual
APPENDIX 5
SPECIFICATIONS
ACCURACY
TYPICAL
MAXIMUM
LINEAR
(Voltage)
± 0.025% of full scale ± 0.100% of full scale
(Current)
± 0.050% of full scale ± 0.150% of full scale
RTD
1°
± 0.050% of span
± 0.150% of span
0.1°
± 0.095% of span ± 0.225% of span
THERMOCOUPLE
J, K, N, E (> 0°C)
± 0.060% of span
± 0.150% of span
J, K, N, E (< 0°C)
± 0.150% of span
± 0.375% of span
T (> 0°C)
± 0.100% of span
± 0.250% of span
T (< 0°C)
± 0.250% of span
± 0.625% of span
R, S (> 500°C)
± 0.150% of span
± 0.375% of span
R, S (< 500°C)
± 0.375% of span
± 0.925% of span
B (> 500°C)
± 0.150% of span
± 0.375% of span
B (< 500°C)
± 0.500% of span
± 1.000% of span
W, W5 & Platinel II ± 0.125% of span
± 0.325% of span
Display accuracy is ±
1 digit. These accuracy specifications are at
reference conditions (25°C) and only apply for NIST ranges.
Detailed accuracy information is available upon request.
CONTROL ALGORITHM
PID, P with manual reset, PI, PD with manual reset, and On-Off
are selectable from the front panel. Duplex outputs each use
the same algorithm, except On-Off may be used with PID. The
PID algorithm used is non-interacting.
TUNING PARAMETERS
Proportional Band:
0.1 to 999% of input range
Integral:
1 to 9999 seconds/repeat
Derivative:
0 to 600 seconds
Manual Reset/Load Line:
0 to 100% output
Cycle Time:
0.3 to 120 seconds
On-Off Deadband:
up to 15% of input range (in eng. units)
Up to eight sets of PID values may be stored in memory and
selected automatically, based on setpoint value, process variable
value, or the corresponding local setpoint (SP1–SP8).
SELF TUNING OF PID VALUES
POWERTUNE
®
On-demand “pretune”:
This is an open loop algorithm
that may be used on its own to calculate PID variables, or it can
be used to provide preliminary PID values, as well as process
identification information to be used by the adaptive tune.
Three pretune types are available: TYPE 1 for slow thermal
processes; TYPE 2 for fast fluid or pressure applications; and
TYPE 3 for level control applications.
Adaptive tune:
Our exclusive POWERTUNE
®
adaptive tuning
algorithm automatically adjusts the PID values whenever a
process upset occurs. Preliminary information may be input
manually or automatically calculated by our pretune algorithm.
OVERSHOOT PROTECTION
POWERBACK is a proprietary, user-invoked, setpoint
overshoot protection algorithm. When invoked, POWERBACK
reduces or eliminates setpoint overshoot at power up or after
setpoint changes. POWERBACK monitors the process
variable to make predictive adjustments to the control
parameters, a feature that helps eliminate overshoot of
setpoint.
ISOLATION
Inputs and outputs are grouped into the following blocks:
Block 1:
process variable
Block 2:
outputs 1, 2, and 4
Block 3:
communications, set of five digital inputs, output 3 (Earth
Ground)
Block 4:
remote setpoint
Each block is electrically isolated from the other blocks to
withstand a HIPOT potential of 500 Vac for 1 minute or 600
Vac for 1 second, with the exception of blocks 1 and 4, which
are isolated to withstand a HIPOT potential of 50 volts peak
for 1 minute between each other. Inputs and outputs are not
isolated from other inputs and outputs within the same block.
CONTROLLER ARCHITECTURE
The 535 Controller hardware can be configured as follows:
Inputs:
One univeral process variable input is standard. Available
options include: remote setpoint, slidewire feedback and 5 digital
inputs.
Outputs:
Four outputs are available. See Ordering Information.
RS-485 Communications:
Available as option with any configuration.
PROCESS VARIABLE INPUTS - 2 PROCESS VARIABLES
AVAILABLE
Universal input type. Any input type may be selected in the field.
Selection of input type (thermocouple, RTD, voltage or current)
via jumper. Selection of particular sensor or range is via front
panel.
