User`s manual

Specifications
A-14 Appendix 5 535 User's Manual
RTDs RANGE °F RANGE °C
100 Pt. (DIN) –328 to 1562 –200 to 850
–328.0 to 545.0 –200.0 to 285.0
100 Pt. (JIS) –328 to 1202 –200 to 650
–328.0 to 545.0 –200.0 to 285.0
100 Pt. (SAMA) –328 to 1202 –200 to 650
–328.0 to 545.0 –200.0 to 285.0
TRANSMITTER SIGNALS INPUT RANGE
Milliamps DC 4 to 20
0 to 20
Voltage DC 1 to 5
0 to 5
Millivolts DC 0 to 10
0 to 30
0 to 60
0 to 100
–25 to 25
LINEARIZATION
Thermocouple and RTD inputs are automatically linearized.
Transmitter inputs may be linearized with a square root function or
user-definable 15-point straight line linearization function.
INPUT IMPEDANCE
Current Input: 250 ohms Thermocouples: 10 Mohms
Voltage Input: 1 Mohms RTDs: 10 Mohms
UPDATE RATE
Input is sampled and output updated 10 times per second. Display is
updated five times per second.
TRANSMITTER LOOP POWER
Isolated 24 Vdc (nominal) loop power supply is available if a loop power
module is installed in an output socket not used for control. Capacity is 25
mA.
INPUT SIGNAL FAILURE PROTECTION
When input is lost, output is commanded to a predetermined output
(–5 to 105%). Thermocouple burnout is selectable for upscale or
downscale.
INPUT FILTER
Single pole lowpass digital filter with selectable time constant from
0 to 120 seconds.
CALIBRATION
Comes fully calibrated from the factory and continuously calibrates
itself for component aging due to temperature and time, except for
the reference voltage. Field calibration can be easily performed in
the field with a precision multimeter and thermocouple simulator.
Process variable offset and gain factors are provided to correct for
sensor errors.
OUTPUT MODULES
The controller can have a total of four control outputs, alarm outputs
and/or loop power modules installed. There are five types of output
modules which can be configured to suit your particular application.
The modules may be ordered factory-installed, or they may be
installed in the field.
Analog module: Either 0–20 mA or 4–20 mA (front panel select-
able) into a load up to 1000. Accuracy ± 15µA @ 25°C.
Mechanical relay module: SPDT electromechanical relay.
Resistive load rated at 5 amps at 120/240 VAC. Normally open or
normally closed selection is made by jumper. Output 4 is rated at
0.5 amps at 24 VAC and is always normally open.
Solid state relay (triac) module: Resistive load rated at 1 amp at
120/240 VAC . Output 4 is rated at 0.5 amps at 24 VAC. These
outputs are normally open.
DC logic (SSR drive) module: “ON” voltage is 17 Vdc (nominal).
“OFF” voltage is less than 0.5 Vdc. (Current limited to 40mA.)
Loop power supply module: Current is limited to 25 mA @ 24V
(nominally loading).
CONTROL OUTPUTS
Up to two output modules may be designated for control. Any
combination of output modules, with the exception of the loop
power supply module, may be used.
Duplex control is available if output modules are installed in the
first and second output sockets.
Position proportioning control with feedback is available if
mechanical or solid state relay modules are installed in the first two
output sockets, and the slidewire feedback option is installed.
Slidewire feedback range is 0 to 1050 ohms.
“Velocity” position proportioning control is available by
installing mechanical or solid state relay modules in the first two
output sockets. A special algorithm controls an electric actuator
without the slidewire feedback signal.
Staged (split range) outputs are available if analog modules are
installed in the first and second output sockets. This algorithm will
allow the output range to be split between the two outputs.
RETRANSMISSION OUTPUT
Based on available outputs (any socket not used for control), up to
two different variables can be simultaneously programmed for
retransmission. Each precise, 16-bit resolution output may be
scaled for any range. Variable selection includes: PV, SP, RAMP
SP, and OUTPUT.
ALARMS
The 535 controller has two software alarms. High and low
alarms may be sourced to the PV, SP, RAMP SP, DEVIATION
and OUTPUT. If an alarm is tripped, the alarm message will
show, the ACK key will illuminate (if acknowledgeable) and the
ALM icon will light. If the alarm is tied to the first available non-
control output, the “1” below the ALM icon will light. Similarly, if
the alarm is tied to the second non-control output, the “2” below
the ALM will light. The availability of outputs determines how
many alarms can be tied to relays.
Up to two alarm outputs are available if an associated mechanical,
solid state relay or DC logic module is installed in any output socket
not used for control.
Global Alarm feature allows one or more of the internal software
alarms to be tied to the same single, physical output. The
acknowledge key is active for alarms associated with either loop.