Tempco TEC-9300, Instruction Manual, Page: 45 / 92

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Chapter 4 Full Function Programming
4–1 Event Input
Refer to section 2-10 for wiring an event input.
The event input accepts a digital type signal. Three types of sig-
nal, relay or switch contacts, open collector pull low, and TTL
logic level can be used to switch the event input.
One of ten functions can be chosen by using (EIFN) in
the setup menu.
NONE:
Event input no function
If chosen, the event input function is disabled. The controller
will use PB1, TI1, and TD1 for PID control and SP1 (or other
values determined by SPMD) for the set
point.
SP2: If chosen, the SP2 will replace
the role of SP1 for control.
PID2:
If chosen, the second PID set
PB2, TI2, and TD2 will be used to
replace PB1, TI1, and TD1 for control.
SP.P2:
If chosen, SP2, PB2, TI2, and
TD2 will replace SP1, PB1, TI1, and
TD1 for control.
NOTE: If the second PID set is chosen
during auto-tuning and/or self-tuning
procedures, the new PID values will be
stored in PB2, TI2, and TD2.
RS.A1: Resets alarm 1 as the event
input is activated. However, if the alarm
1 condition is still existent, alarm 1 will
be retriggered when the event input is
released.
RS.A2: Resets alarm 2 as the event
input is activated. However, if the alarm
2 condition is still existent, alarm 2 will
be retriggered when the event input is
released.
R.A1.2: Resets both alarm 1 and alarm
2 as the event input is activated.
However, if alarm 1 and/or alarm 2 are
still existent, alarm 1 and/or alarm 2
will be triggered again when the event
input is released.
RS.A1, RS.A2, and R.A1.2 are par-
ticularly suitable to be used for latching
and/or latching/holding alarms.
D.O1:
Disables output 1 as the event input is activated. The out-
put 1 control variable MV1 is cleared to zero.
D.O2: Disables output 2 as the event input is activated. The out-
put 2 control variable MV2 is cleared to zero.
D.O1.2:
Disables both output 1 and output 2 by clearing MV1
and MV2 values as soon as the event input is activated.
When any of D.O1, D.O2, or D.O1.2 are selected for EIFN,
output 1 and/or output 2 will revert to their normal conditions as
soon as the event input is released.
LOCK: All parameters are locked to prevent them from being
changed. See section 4-13 for more details.
SP2F Function: Defines the format of SP2 value. If ACTU is
selected for SP2F in the
setup menu, the event
input function will use
the SP2 value for its sec-
ond set point. If DEVI is
selected for SP2F, the
SP1 value will be added to SP2. The sum of SP1 and SP2
(SP1+SP2) will be used by the event input function for the sec-
ond set point value. In certain applications, it is desirable to
move the second set point value with respect to the value of set
point 1. The DEVI function for SP2 provides a convenient way
to do this.
Modification from RS-232 to event input:
Because of the limited number of pins, pin 14 is used for both
event input and RS-232. If you want to change function of the
TEC-9300 from RS-232 to event input, you must modify jumper
JP22 on the terminal board by opening jumper J1 and shorting
jumper J2. Refer to section 2-16 for the location of jumper JP22.
4–2 Second Set Point
In certain applications it is
desirable to have the set
point change automatically,
without the need to adjust it.
You can apply a signal to the
event input terminals (pin 14
and pin 13). The signal
applied to the event input
may come from a timer, a
PLC, an alarm relay, a man-
ual switch or other devices.
Select SP2 for EIFN, which
is in the setup menu. This is
available only when SP1.2,
MIN.R, or HR.R is used for
SPMD, where MIN.R and
HR.R are used for the ramp-
ing function. See section 4-4.
Application 1:
A process
is required to be heated to a
higher temperature as soon
as its pressure exceeds a cer-
tain limit. Set SPMD=SP1.2,
EIFN=SP2 (or SP.P2 if the second PID is required for the higher
temperature too). The pressure gauge is switched ON as it senses
a higher pressure. Connect the output contacts of the pressure
gauge to the event input. SP1 is set for a normal temperature and
SP2 is set for a higher temperature. Choose ACTU for SP2F.
Application 2: An oven is required to be heated to 300°C
from 8:00AM to 6:00PM. After 6:00PM it should be maintained
at 80°C. Use a programmable 24 hour cycle timer for this pur-
pose. The timer output is used to control the event input. Set
SPMD=SP1.2, and EIFN=SP2 (or SP.P2 if the second PID is
required to be used for the second set point). SP1 is set at 300°C
and SP2 is set at 80°C. Choose ACTU for SP2F. After 6:00PM
the timer output is closed. The event input function will then
select SP2 (=80°C) to control the process.
Refer to section 4-1 for more descriptions about SP2F function .
Terminals:
Event input +
Event input –
EIFN
0 NONE
1 SP2
2 PID2
3 SP.P2
4 RS.A1
5 RS.A2
6 R.A1.2
7 D.O1
8 D.O2
9 D.O1.2
10 LOCK
14
13
SP2F=Format of SP2 value
ACTU: SP2 is an actual value
DEVI: SP2 is a deviation value
Apply Signal To
Event input +
Event input –
Setup
EIFN choose SP2 or SP.P2
Availability
SPMD choose
or
or
Format of SP2 Value
SP2F choose
Actual Value
or Deviation Value
14
13