Indicator N1500G
NOVUS AUTOMATION 3/6
If an alar situation occurs, the respective alar status LEDs in the
front panel will light regardless of the relay alar blocking status.
5.2.5. Tare
This function is used to zero the display. The tare residual values is
subtracted or added to the total easured value. This function is
generally used with load cells and strain gauges and applies to linear
4-20 A, 0-50 V and 0-5 V inputs.
5.3. PROCESS VARIABLE RETRANSMISSION
As an option, the indicator can be supplied with an isolated 0-20 A
or 4-20 A analog output for Process Variable (PV) retrans ission.
The PV values which define the range of the 0-20 A or 4-20 A
retrans ission can be progra ed by the user in the high and low
indication limits.
Note – PV retrans ission does not take an action of the special Hold
and Peak Hold functions.
5.4. CUSTOMIZED LINEARIZATION
The indicator features three types of input signals that allow for
custo linearization, this is, the user can configure the device in
order to obtain accurate indications for electrical signals with non-
linear and ever increasing characteristics. The three types of input
signal are: c.0
c.0c.0
c.0-
--
-50
5050
50, c.4
c.4c.4
c.4-
--
-20
2020
20 and c.0
c.0c.0
c.0-
--
-5
55
5. When selected, the indicator
creates the Custo Linearization Cycle.
The input signal ust be divided in seg ents ( axi u 19), defined
in order to ini ize the error between the input signal and the
corresponding indication. In the Custo Linearization cycle the user
finds the para eterinp.01
inp.01inp.01
inp.01 which corresponds to the start point of
the first seg ent and ust set the ini u value of the input signal.
Then the para eter ovt.01
ovt.01ovt.01
ovt.01 that corresponds to the desired
indication for this first point. Soon afterinp.02
inp.02 inp.02
inp.02 which is the starting
point of the second seg ent and ovt.02
ovt.02 ovt.02
ovt.02 the respective indication.
In Inp.o1
Inp.o1 Inp.o1
Inp.o1 ust always set the ini u value of the selected signal
type: 0.0 V for c.0
c.0c.0
c.0-
--
-50
5050
50, 4.0 A for c.4
c.4c.4
c.4-
--
-20
2020
20 and 0.0 V for c.0
c.0c.0
c.0-
--
-5
55
5.
For linearization’s that do not require all 19 seg ents, si ply set the
axi u value of the selected input type to the last required
seg ent. Note: The Lower Indication Li it and Upper Indication Li it
para eters ust be set before these Custo Linearization settings.
In this ode the sa pling rate is 4 easure ents per second.
6. INSTALLATION
6.1. PANEL ASSEMBLY
The indicator is co posed of two parts: the fixing base and the front
part with ain circuits. The base ust be re oved fro the front and
fixed onto a wall by eans of four designed holes as shown in
Figure 1.
90
266
4X 4mm
3X 12mm
Figure 1 - Mounting the indicator in the panel cut-out.
The front part is only attached to the fixing base after all electrical
wire connections are done.
6.2. ELECTRICAL CONNECTIONS
The internal electronics can be re oved fro the front panel without
any cable disasse bly. The input signals and power connections are
shown in Figure 2.
Figure 2 - Back panel ter inals
Note: The left side of the indicator is re ovable. It is fixed there
a label containing the connections.
6.2.1. Recommendations for Installation
•
Input signal wires should be laid out away fro power lines and
preferably inside grounded conduits.
•
Instru ent ains (line) supply should be suitable for this purpose
and should not be shared.
•
In controlling and onitoring applications, possible consequences
of any syste failure ust be considered in advance. The internal
alar relay does not warrant total protection.
•
RC filters (47 Ω and 100 nF) are highly reco ended for valve
and contactor coils, etc.
6.2.2. Sensor or input signal connection
These connections should be properly done and ter inals ust be
well tightened. Ther ocouples ust be installed with proper
extension or co pensation cables.
Pt100 RTDs ust be 3-wire connected and the wires connected
should have the sa e electrical resistance (sa e wire gauge) for
correct cable length co pensation. Four-wire RTDs can be
connected by disconnecting the fourth wire. Two-wire RTDs can be
connected by shortening ter inals 7 and 8 and connecting the Pt100
to ter inals 8 and 9.
7. OPERATION
For best results this indicator requires correct setting of para eters
as input type (T/C, Pt100, 4-20 A, etc), alar s actuation point,
alar function, etc.
These para eters are divided in five levels or groups of para eters
which we will refer to as CYCLES.
Cycle Access
1- Work free access
2- Alarms
reserved access
3- Functions
4- Configuration
5- Calibration
Table 4 - Para eters Cycles
The work cycle has free access. All other cycles require a certain
co bination of key strokes to be accessed. The co bination is:
and
keys pressed simultaneously
