Description
The Ultra SlimPak G118 is a
DIN rail mount, RTD input limit
alarm with dual setpoints and
two contact closure outputs.
The field configurable input
and alarm functions offer flexible
setpoint capability. There are
up to eight temperature ranges
available for each RTD type
to ensure accuracy and maximize
setpoint resolution.
The
G118 is configurable as a single
or dual setpoint alarm, with
HI or LO trips and failsafe
or non-failsafe operation. Also
included are adjustable deadbands
(0.25 to 5% of full scale input)
for each setpoint and a flexible
DC power supply which accepts
any voltage between 9 and 30VDC.
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Operation
The field configurable G118
limit alarm setpoints can be
config- ured for HI or LO, failsafe
or non-failsafe operation. Each
of the setpoints has a respective
HI or LO deadband. In a tripped
condition, the setpoint is exceeded
and the appropriate red LED
will illuminate. The trip will
reset only when the process
falls below the HI deadband
or rises above the LO deadband
(see Figure 1). For proper deadband
operation the HI setpoint must
always be set above the LO setpoint.
In failsafe operation, the relay
is energized when the process
is below the HI setpoint or
above the LO setpoint (opposite
for non-failsafe). In the failsafe
mode, a power failure results
in an alarm state output.
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