User guide

ManualsBrandsNOVUS ManualsSensorsController N1100

N1100 Controller

NOVUS AUTOMATION 10/11

CALIBRATION OF THE INPUT

All inputs are factory calibrated and recalibration should only be done

by qualified personnel. If you are not familiar with these procedures

do not attempt to calibrate this instrument.

The calibration steps are:

a) Configure the type of input to be calibrated.

b) Configure the lower and upper limits of indication for the

maximum span of the selected input type.

c) At the input terminals inject a signal corresponding to a known

indication value a little above the lower display limit.

d) Access the parameter “

inLC

”. With the keys

and

, adjust

the display reading such as to match the applied signal. Then

press the

key.

e) Inject a signal that corresponds to a value a little lower than the

upper limit of indication.

f) Access the parameter “

inkC

”. With the keys

and

, adjust

the display reading such as to match the applied signal. Then

press the

key.

Note: When checking the controller calibration with a Pt100

simulator, pay attention to the simulator minimum excitation current

requirement, which may not be compatible with the 0.170 mA

excitation current provided by the controller.

REMOTE SETPOINT CALIBRATION

All inputs are factory calibrated and recalibration should only be done

by qualified personnel. If you are unfamiliar with these procedures do

not attempt to calibrate this instrument.

If the recalibration or the remote Setpoint is required, proceed as

follows.

a) Configure the remote Setpoint type to be calibrated.

b) Program the low and high limits of the remote Setpoint to the

minimum and maximum values respectively.

c) Apply to the remote Setpoint input a known signal that is slightly

above the low limit of that input.

d) At the parameter “

rsL(

” use the

and

keys to show in

the display the corresponding value of the applied signal. Then

press the

key

e) Apply to the remote Setpoint input a known signal that is slightly

below the high limit of that input.

f) At the parameter “

rsk(

” use the

and

keys to show in the

display the corresponding value of the applied signal. Then press

the

key

ANALOG OUTPUT CALIBRATION

•

Configure I/O 5 for the current output to be calibrated, be it control

or retransmission.

•

In the screen “

Ctrl

”, program manual mode (

man

•

Connect a current meter at the analog output.

•

Enter the calibration cycle with the correct password.

•

Select the screen “

ovLC

”. Press the

and

keys for the

controller to recognize the calibration process of the current

output.

•

Read the current indicated on the current meter and adjust the

parameter “

ovLC

” to indicate this current value (use the

and

keys)

•

Select the screen “

ovxC

”. Press the

and

keys for the

controller to recognize the calibration process of the current

output.

•

Read the current indicated on the current meter and adjust the

parameter “

ovxC

” to indicate this current value

•

Press the key in order to confirm the calibration procedure and

return to the operating level.

SERIAL COMMUNICATION

The controller can be supplied with an asynchronous RS-485 digital

communication interface for master-slave connection to a host

computer (master).

The controller works as a slave only and all commands are started by

the computer which sends a request to the slave address. The

addressed unit sends back the requested reply.

Broadcast commands (addressed to all indicator units in a multi drop

network) are accepted but no reply is sent back in this case.

CHARACTERISTICS

• Signals compatible with RS-485 standard. MODBUS (RTU)

Protocol. Two wire connection between 1 master and up to 31

(addressing up to 247 possible) instruments in bus topology. The

communication signals are electrically insulated from the rest of

the device;

• Maximum connection distance: 1000 meters.

• Time of disconnection for the controller: Maximum 2 ms after last

byte.

• Selectable speed; 8 data bits; 1 stop bit; selectable parity (no

parity, pair or odd);

• Time at the beginning of response transmission: maximum 100

ms after receiving the command.

The RS-485 signals are:

D1 D D +

B Bi-directional data line. Terminal 16

D - A Bi-directional inverted data line. Terminal 17

Optional connection that improves the

performance of the communication.

Terminal 18

GND

CONFIGURATION OF PARAMETERS FOR SERIAL

COMMUNICATION

Three parameters must be configured for using the serial type:

bavd

: Communication speed.

prty

: Parity of the communication.

addr

: Communication address for the controller.

REDUCED REGISTERS TABLE FOR SERIAL

COMMUNICATION

COMMUNICATION PROTOCOL

The MOSBUS RTU slave is implemented. All configurable parameters

can be accessed for reading or writing through the communication port.

Broadcast commands are supported as well (address 0).

The available Modbus commands are:

03 - Read Holding Register 06 - Preset Single Register

05 - Force Single Coil 16 - Preset Multiple Register

HOLDING REGISTERS TABLE

Follows a description of the usual communication registers. For full

documentation download the Registers Table for Serial

Communication in the N1100 section of our web site –