N1540
NOVUS AUTOMATION
6
INPUT CALIBRATION
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:
1.
Configure the input type to be calibrated.
2.
Configure the lower and upper indication limits for the maximum
span of the selected input type.
3.
Connect to the input terminals a signal corresponding to a known
indication value a little above the lower display limit.
4.
Access the
inLC
parameter. With the and keys, adjust the
display reading to match the applied signal. Then press the
P
key
to store it.
5.
Inject a signal that corresponds to a value a little lower than the
upper limit of indication.
6.
Access the
inHC
parameter. With the and keys, adjust
the display reading to match the applied signal. Then press the
P
key to store it.
7.
Validate the calibration.
Note:
When checking the 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 digital panel meter.
ANALOG OUTPUT CALIBRATION
1.
Configure the retransmission type (
retr
=
p.0.20
).
2.
Install a milliampere meter at the terminals 18(+) and 19(-).
3.
Enter the Calibration Cycle.
4.
Select the
ovl(
screen.
5.
Press the key
or the key
.
6.
Read the current value displayed on the milliampere meter.
Through the
and
keys, adjust the value displayed on the
digital panel meter
to match the value displayed on the
milliampere meter.
7.
Press the
P
key to save and access the
ovK
(
parameter.
8.
Press the key
or the key
.
9.
Reread the new current value displayed by the milliampere
meter. Through the
and
keys, adjust the value displayed
on the digital panel meter
to match the value displayed on the
milliampere meter.
10.
Read the current displayed in the milliampere meter and
indicated in the
ovkC
screen through the
and
keys.
11.
Exit the Calibration Cycle.
12.
Validate the performed calibration.
SPECIFICATIONS
DIMENSIONS
: .......................................... 96 x 48 x 35 mm (1/16 DIN)
Panel cut-out..........................................................93.0 x 45.5 mm
Approximate weight: ............................................................. 110 g
POWER SUPPLY
: ..................... 100 to 240 Vac/dc (±10 %), 50/60 Hz
Optional 24 V: .................... 12 to 24 Vdc / 24 Vac (-10 % / +20 %)
Maximum consumption: ......................................................... 6 VA
ENVIRONMENTAL CONDITIONS
:
Operation temperature: ................................................ 0 to 50 °C
Relative humidity: ................................................... 80 % @ 30 °C
For temperatures above 30 °C, reduce 3 % per °C. Indoor use;
Installation Category II, Pollution Degree 2; altitude < 2000 m.
INPUT
................................................................ According to
Table 01
Internal resolution: ....................................... 32767 levels (15 bits)
Display resolution: ................. 32000 levels (from -2000 to 30000)
Temperature resolution: ......................................... 0.1 / 1 °F / °C
Input reading rate: ......................................... Up to 55 per second
Accuracy: ... Thermocouples
J
,
K
,
T
,
E
: 0.25 % of the span
±
1 °C
.................. Thermocouples
N
,
R
,
S
,
B
: 0.25 % of the span
±
3 °C
................................................................ Pt100: 0.2 % of the span
.......... 0-20 / 4-20 mA, 0-50 mV, 0-5 V, 0-10 V: 0.2 % of the span
Input impedance: ........ Pt100, thermocouples, 0-50 mV: > 10 M
Ω
................................................................. 0-5 V, 0-10 V: > 500 k
Ω
.................................................................... 0-20 / 4-20 mA: 100
Ω
Pt100 measuring: .................................. 3-wire type, (
α
=0.00385)
With compensation of the cable length, max 50 meters,
excitation current of 0.170 mA.
OUTPUT ALARM1
: .................. Relay SPST; 240 Vac / 30 Vdc / 1.5 A
OUTPUT ALARM2
: .................. Relay SPST; 240 Vac / 30 Vdc / 1.5 A
RETRANSMISSION (mA RT – OUTPUT)
: ............ 0-20 mA / 4-20 mA
Accuracy ........................................................................ 0.15 % FS
Maximum impedance ....................................... 500
Ω
(10 V max.)
Thermal coefficient .................................................. 0.004 mA / °C
Resolution .................................................................... < 0.005 mA
AUXILIARY VOLTAGE SOURCE
: ....... 24 Vdc (±10 %) / 20 mA max.
HOUSING
: ............................................. Polycarbonate (PC) UL94 V-2
BACK PANEL
: ...................................................... ABS+PC UL94 V-0
CONNECTIONS (WIRING)
: ......... Plug-in block terminals, 5 mm pitch
USB INTERFACE
:
2.0, CDC class (virtual communications port),
Modbus RTU protocol.
START-UP OPERATION
:
3 seconds after connecting the power
supply.
CERTIFICATIONS
:
IDENTIFICATION
N1540
Basic version.
N1540-24V
Basic version with power supply 24 V.
N1540-485
With serial communication RS485.
N1540-485-24V
Version with RS485 and power 24 V.
N1540-RT
Version with PV retransmission.
N1540-RT-24V
Version with PV retransmission and power
supply 24 V.
Note
:
1.
Communication signals are electrically isolated from the other of
the circuits.
2.
The analog output circuit is electrically isolated from the other
circuits.
3.
RS485 Communication and PV Retransmission features are
mutually exclusive.
MAINTENANCE
PROBLEMS WITH THE DIGITAL PANEL METER
Connection errors and inadequate programming are the most
common problems encountered during the operation. A final revision
can avoid loss of time and damages.
The digital panel meter displays some messages to help the user
identify the problems.
MESSAGE
PROBLEM DESCRIPTION
----
Open input. Without sensor or signal.
Err1
Err6
Connection and/ or configuration problems. Check
the wiring and the configuration.
Table 5 –
Error messages
