APPLICATION NOTES :
In order to operate CN616 Controller successfully it must be set up
correctly for the application. The unit can be set manually or by the
computer through RS232 link. Up to 10 units can be connected to a
single RS232 port. The computer program is intuitive and does not
require explanation. There are two features that can not be set by the
computer.
1.
Calibration. This requires lab setting for accuracy.
2.
Unit number. To avoid conflict in communication.
If number of units are linked together, care must be taken to
avoid duplication of unit identification numbers.
CN616 has 3 operating modes.
1.
STANDARD MODE
2.
RAMP AND SOAK1
[Profile]
3.
RAMP AND SOAK2
[Profile]
The difference between RAMP AND SOAK1 & 2 is what happens at
the end of profile run. In RAMP AND SOAK1 after last segment is
finished the power is turned off, while in RAMP AND SOAK2 after
the last segment is finished the temperature will be controlled at the last
setpoint indefinitely or until profile is started again.
STANDARD MODE
Setpoints for STANDARD MODE are set in function 36.
Each zone runs independently of other zones. I.e.:- zone 1 may have
PID control, zone 2 may have on/off control, and zone 3 may be set to
cooling, [outputs reversed]. The only common things to all zones are
PID parameters and thermocouple type. Any zone can be turned off
during run by function 31.
RAMP AND SOAK [Profile] MODE.
Setpoints for Profile are set in function 75 [01 to 20]
To run Profile model code must be set to 51 or 52.[function 33]
Until Profile is started by function 79, all zones will run in STANDARD
MODE. Function 79 can start Profile for any single zone or all zones at
once.
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In profile run control starts at ambient temperature, ambient temperature
becomes first setpoint and is advanced to the first segment setpoint at
the rate of the first segments slope. Profile run will continue until last
segment is reached, as set by function 74. Profile can be restarted at any
time for any one zone or all zones at once.
SETTING CN 616 TC1 TO CONTROL 4 ZONE FURNACE.
Configuration:
Alarms
Zone Setpoint HI LO
1 400ºF 15ºF 20ºF
2 500ºF 15ºF 15ºF
3 530ºF 15ºF 20ºF
4 300ºF 20ºF 20ºF
Alarms Non latching
Thermocouple Type “K”
Autotune on Zone 2
Heaters, 120 VAC , 500 watt each
Controller power, 120 VAC
Drivers :-
Solid State Relays ( Omega type SSRL240DC25) or equivalent.
INSTALLATION:-
Install the controller as instructed in the USER GUIDE Manual page 15.
Wire the power terminals - manual page 17
Wire the thermocouples as shown - manual page 20
NOTE :-
Since it is a 4 zone furnace, use only 4 type “K” thermocouples on
zones 1, 2, 3, &4.
Short terminals 5 & 6 with copper wires. To avoid shorting thermo-
couples to the Electric heaters or grounds, use ungrounded and shielded
thermocouples.
Wire controller outputs as shown in the Manual page 40. Use only 4
outputs Z1, Z2, Z3, & Z4. Do not connect anything to terminals Z5
& Z6. Do NOT power the heaters at this time.
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Summary of Contents for CN616TC1
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