5
Isolation
DeviceNet
E5ZE
Power
supply
RS-232C
RS-422
RS-485
Input
terminal
block
CT INPUT
connector
CONTROL
connector
ALARM
connector
FG
The components of the E5ZE contained within bold lines in the above diagram
are electrically isolated.
Note The covers of the CT INPUT, CONTROL, and ALARM connectors are con-
nected to the frame ground (FG).
For the E5ZE-8
TC
(Thermocouple Input Models), the thermocouple
inputs of the control points are insolated from each other.
1-3
Main Functions
The E5ZE is connected to platinum resistance thermometers or thermocouples,
depending on the model used. The type of temperature sensor is specified using
the INPUT selector on the front panel of the Unit. The input values can be ad-
justed using the input adjustment function.
The control outputs can be either voltage output or current output, depending on
the model. The control period and direct/reverse operation can be specified us-
ing the set values.
A maximum of 2 alarm outputs are possible. There are 12 alarm modes that can
be set for each alarm output according to set values. The outputs are compre-
hensive output for all control points.
The output values are limited by the following 2 limiters:
•
Output limiter
•
Output change rate limiter
If an output value is outside the upper or lower limit for the output, the output will
be limited to the preset upper or lower limit. The output change rate limiter limits
the rate at which output values change per unit time.
The ramp function is used to limit the control temperature (set point) from chang-
ing rapidly. If the set point changes quicker than the preset rate, the rate of tem-
perature change will be limited to the preset rate, and the temperature will gradu-
ally change until it reaches the new temperature. The ramp can be set by the
user.
Input Type
CONTROL Outputs
ALARM Outputs
Output Limitations
Ramp
Main Functions
Section 1-3
