NOVUS Controller N1100 - Manual (Page 2)

Controller N1100
NOVUS AUTOMATION 2/8
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RTD (Pt100)
Figure 4 shows the Pt100 wiring, for 3 conductors. Terminals 10, 11
and 12 must have the same wire resistance for proper cable length
compensation. For 2 wire Pt100, short circuit terminals 11 and 12.
4-20mA
4-20mA 100R
Figure 5 – Current wiring Figure 6 – Remote SP input
•
4-20 mA
Refer to Figure 5. (The controller provides an internal electronic
shunt for the input current. No changes in the circuit are necessary).
•
Remote setpoint
Input available at terminals 9 and 10. The user must connect a 100
Ω
resistor shunt as indicated in Figure 6.
•
Digital Input
I/O3 and I/O4 can be used as digital inputs, accepting either dry
contact or NPN open collector signals. Figure 7a shows a switch
driving the I/O3 digital input. I/O4 can be used analogously. The
digital input at I/O5 is driven only by dry contact signals. Figure 7b
shows a typical digital input wiring for I/O5.
Figure 7a – Digital input at I/O3 Figure 7b – Digital input at I/O5
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Digital Output
I/O3, I/O4 and I/O5 can also be configured as digital outputs (I/O3 and
I/O4 provide a 5 Vdc output signal whereas I/O5 a 12 Vdc signal). An
example of usage is shown in Figure 8 for the I/O3 and in Figure 9 for
the I/O5. I/O5 is electrically isolated from the sensor input.
Figure 8 – I/O3 driving a SSR. Figure 9 – I/O5 digital output wiring.
OPERATION
The front panel is shown in Figure 10.
Figure 10 - Front panel parts
Status display/PV: shows the value of PV (Process Variable). When
in programming mode, shows the parameter name.
Parameter display/SV: shows the SV (Setpoint Variable) value and
the value of other parameters of the controller.
COM Indicator: Flashes when communication messages are sent by
the controller.
TUNE Indicator: Lights during the execution of PID automatic tunning.
MAN Indicator: Lights when the controller is in manual.
RUN Indicator: Lights when the controller is active, with control and
alarm outputs enabled.
OUT Indicator: For relay or pulse control output, reflects the actual
state of the output. If an analog output is assigned for control, lights
continuously.
A1, A2, A3 and A4 Indicators: Status of the alarms.
P - PROG key: used to walk through the menu cycles
- BACK key: go back to the previous displayed parameter
- INCREASE and - DECREASE keys: Used to change
parameter values
When the controller is turned on, its firmware version is displayed for
3 seconds, after which the controller starts normal operation. The
values of PV and SV are displayed and the outputs are enabled.
Before the controller is ready to be used in a given process, it
requires some basic configuration, such as:
•
input type (T/C, Pt100, 4-20 mA,...) at the “tYPE tYPE tYPE tYPE” prompt,
according to Table 1.
•
output type at “I/O 1”, “I/O 2”,... “I/O 5” prompts (see Table 2).
•
setpoint variable SV. Set the remaining parameters.
•
PID parameters (or hysteresis for ON / OFF control).
Other functions, including alarms, ramp and soak, timer, digital input,
etc., may be useful for a better system performance. The parameters
are grouped in 7 cycles.
CYCLE ACCESS
1- Operation Free access parameters *
2- Tuning
3- R&S Program
4- Alarms
5- Input Configuration
6- I/Os
7- Calibration
Reserved access parameters **
* These parameters can be viewed but not changed if the cycle is
protected.
** Requires a key combination to access the cycle.
Press P to advance and to go back in the menu cycle.
Keep pressing the P or key to move fast forward or backward.
Press and P simultaneously to move from one cycle to the next
one.
At the end of each cycle the controller returns to the operation cycle.
PROGRAM SECURITY
Each menu cycle can be locked (protected) by pressing and
simultaneously for 3 seconds. Press and for 3 seconds to
unlock. A short blink of the display confirms the lock/unlock change.
This will alternately lock or unlock the
and keys to avoid
tampering.
For further protection, the unlock operation through the keypad may
be disabled by changing the position of an internal strap inside the
controller:
When PROT is OFF, the user is allowed to lock and unlock the
cycles using the keypad as explained above. If PROT is ON, the
cycles lock / unlock operation is disable.