Tempco TEC-9300, Инструкция по эксплуатации

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4–4 Ramp and Dwell, continued…
Ramp and dwell
A ramp may be accompanied with a dwell timer to control the
process. Here is an example.
Example with ramp and dwell
Select HRR for SPMD, PU for IN1U, 2-DP for DP1, and set
RAMP=60.00. Select TIMR for A2FN and set TIME=20.0. Set
E1 for SP2. When power is applied, the process value starts at
0.00, SP1=30.00, and SP2=40.00. The timer output is used to
control event input.
4–5 Remote Set Point
Selecting PV1 or PV2 for
SPMD will enable the TEC-
9300 to accept a remote set
point signal. If PV1 is selected
for SPMD, the remote set
point signal is sent to input 1,
and input 2 is used for the
process signal input. If PV2 is selected for SPMD, the remote set
point signal is sent to input 2, and input 1 is used for the process
signal. To achieve this, set the following parameters in the setup
menu.
Case 1: Use Input 2 to accept remote set point
FUNC=FULL
IN2, IN2U, DP2, IN2L, IN2H, are set according to remote sig-
nal.
PVMD=PV1
IN1, IN1U, DP1, are set according to the process signal
IN1L, IN1H if available, are set according to the process signal
SPMD=PV2
Case 2: Use Input 1 to accept remote set point
FUNC=FULL
IN1, IN1U, DP1, IN1L, IN1H, are set according to remote sig-
nal.
PVMD=PV2
IN2, IN2U, DP2, are set according to the process signal
IN2L, IN2H if available, are set according to the process signal
SPMD=PV1
Note 1: If PV1 is chosen for both SPMD and PVMD, an
error code will appear. If PV2 is chosen for both
SPMD and PVMD, an error code will appear. In either
case, the TEC-9300 will not control properly.
Note 2: If PV1/PV2 is selected for SPMD, a signal loss will
result in the controller reverting
to manual mode with 0% output.
Setup
FUNC = FULL
SPMD = PV2, PVMD = PV1
or
SPMD = PV1, PVMD = PV2
4–6 Differential Control
In certain applications it is desirable to control a second process
such that its process value always devi-
ates from the first process by a constant
value. To achieve this, set the following
parameters in the setup menu.
FUNC=FULL
IN1, IN1L, IN1H are set according to input 1 signal
IN2, IN2L, IN2H are set according to input 2 signal
IN1U, DP1, IN2U, DP2, are set according to input 1 and input 2
signal
PVMD=P1-2 or P2-1
SPMD=SP1.2
The response of PV2 will be parallel to PV1 as shown in the fol-
lowing diagram at right
The PV display will indicate PV1-PV2 value if P1-2 is chosen for
PVMD, or PV2-PV1 value if P2-1 is chosen for PVMD. If you
need PV1 or the PV2 to be displayed instead of PV, you can use
the display mode to select PV1 or PV2 to be viewed. See section
3-23.
Error messages
If P1-2 or P2-1 is selected for PVMD, while PV1 or PV2 is
selected for SPMD, an error code will appear.
In this case the signals used for input 1 and input 2 should be the
same unit and the same decimal point, that is, IN1U=IN2U,
DP1=DP2, otherwise an error code will appear.
Setup
PVMD=P1-2
or PVMD=P2-1
SPMD=SP1.2