E5AX-BA/BAH/E5EX-BA/A02/A03
E5AX-BA/BAH/E5EX-BA/A02/A03
4
Heater Burnout Detection Characteristics
Max. heater current
50 A, single-phase
Monitor accuracy of input current
±
5% of full scale
±
1 digit max.
Heater burnout detection setting range
0.1 to 49.9 A (in units of 0.1 A)*
Heater current monitor range
0.0 to 50.0 A
Min. detectable ON time
200 ms**
*Heater burnout is not detected when current is set to 0.0 A; the burnout alarm will be automatically turned ON when current is set to 50.0 A.
**When the control output is ON for less than 200 ms, heater burnout is not detected and heater current is not measured.
Communications
Protocol
RS-422
RS-485
Transmission method
4-wire, half-duplex
2-wire, half-duplex
Synchronization method
Start-stop synchronization
Baud rate
150/300/600/1,200/2,400/4,800/9,600 bps
Transmission code
ASCII (7-bit)
Communications
Write to Temperature
Controller
Main setting, set alarm value, proportional band, integral time, derivative time,
Auto-tuning (AT) start/stop, heater burnout alarm set value
Read from
Temperature Controller
Main setting, set alarm value, proportional band, integral time, derivative time, process
temperature, heater burnout alarm set value, Current Transformer input value, etc.
Note:
1. The maximum total cable length must not exceed the following limits.
RS-422: 500 m, RS-485: 500 m
2. A maximum of 32 Temperature Controllers can be connected to one host computer using serial communications (RS-422). In the
case of the RS-485 serial communications, however, a maximum of 31 Temperature Controllers can be connected to one host
computer.
Nomenclature
E5AX-BA/BAH
Heater Burnout Indicator
Lights when a heater burnout is de-
tected and stays lit unit reset.
Bank Number Display
Displays the present bank number.
Auto-tuning Indicator
Flashes on and off every second
when auto-tuning is taking place.
Output Indicator
Lights when the control output is
ON. Turns off when the current out-
put unit is used.
Level Key
Press for 2 seconds minimum to
change levels to set different
groups of parameters.
Display Key
Press to shift the display to the
next parameter.
Down Key
Press to decrease the main setting
or other parameters. Successively
decrease the value when held
down.
Front cover
Process Value (PV) Display
Displays the process value, the
character for parameter being dis-
played on the SV display, and error
messages.
Set Value (SV) Display
Displays the main setting and other
parameters.
Alarm Indicator
Lights when alarm output is ON.
Sensor Error Indicator
Lights when sensor error is de-
tected.
Auto-tuning Key
Press for 1 second minimum to start
auto-tuning. Press for 1 second
minimum during auto-tuning to stop
auto-tuning.
UP Key
Press to increase the main setting or
other parameters. Successively in-
creases the value when held down.
