Helios PD2-6262 Dual Analog Input Rate/Totalizer
Instruction Manual
10
Dual Process Input
Two Inputs
Two non-isolated inputs, each separately
field selectable:
0-20, 4-20 mA,
10 V (0-5, 1-5, 0-10 V),
Modbus PV (Slave)
Isolated
Transmitter
Power Supply
Terminals P+ & P-: 24 VDC
10%.
All models selectable for 24, 10, or 5 VDC
supply (Switch labeled P+/P-). 85-265 VAC
models rated @ 200 mA max, 12-24 VDC
powered models rated @ 100 mA max.
5 & 10 VDC supply rated @ 50 mA max.
Refer to
When the Light / Horn is powered by the
transmitter power supply, see MOD-PD2LH
Light / Horn's transmitter power supply
specification in MOD-PD2LH manual for
additional details. Light / Horn power not
available for 5 or 10 VDC supplies.
Channels
Channel A, Channel B,
Channel C (Math channel)
Programmable
Constants
Constant P (Adder):
-99.999 to 999.999, default: 0.000
Constant F (Factor):
0.001 to 999.999, default: 1.000
Math
Functions
Name
Function
Setting
Addition
(A+B+P)*F
Sunm
Difference
(A-B+P)*F
diF
Absolute diff.
((Abs(A-B))+P)*F
diFAbS
Average
(((A+B)/2)+P)*F
AVG
Multiplication
((A*B)+P)*F
nmulti
Division
((A/B)+P)*F
diVide
Max of A or B
((AB-Hi)+P)*F
Hi-Ab
Min of A or B
((AB-Lo)+P)*F
Lo-Ab
Draw
((A/B)-1)*F
drAuw
Weighted avg. ((B-A)*F)+A
uw avg
Ratio
(A/B)*F
ratio
Ratio 2
((B-A)/A)+P)*F
ratio2
Concentration (A/(A+B))*F
Concen
Total Addition
(tA+tB+P)*F
Sunm t
G. Tot. Addition (GtA+GtB+P)*F
SunmGT
Total
Difference
(tA-tB+P)*F
Dif GT
G. Tot.
Difference
(GtA-GtB+P)*F
Dif GT
Total Ratio
(tA/tB)*F
Tratio
Total Ratio 2
((tB-tA)/tA)*F
t-rat2
Total Percent
(tA/(tA+tB))*100
T PCT
Note: The F constant can be any value from
0.001 to 999.999. If the value is less than 1,
it will have the same effect as a divider. For
example, the average could also be derived
by using (A+B)*F, where F = 0.500.
Sequence of
Operations
for Input
Programming
1.
Select Input for A and B
2.
Set up the rate, total, and grand total
engineering units for channels A & B,
and units for math channel C
3.
Set up rate, total, and grand total
decimal points for channels A & B,
and decimal point for math channel C
4.
Program channel A & B rate
parameters
5.
Program channel A & B total and reset
parameters
6.
Set up display lines 1 and 2
7.
Select the transfer function for A & B
(e.g. Linear)
8.
Select Math function for Channel C
9.
Program constants for Factor (F) and
Adder (P).
10. Program cutoff values for A and B
Accuracy
±0.03% of calibrated span ±1 count,
square root & programmable exponent
accuracy range: 10-100% of calibrated
span
Temperature
Drift
0.005% of calibrated span/
C max from
0 to 65
C ambient, 0.01% of calibrated
span/
C max from -40 to 0
C ambient
Input Signal
Conditioning
Linear, square root, or programmable
exponent
Multi-Point
Linearization
2 to 32 points for channel A and B
Programmable
Exponent
User selectable from 1.0001 to 2.9999 for
open channel flow
Low-Flow
Cutoff
0.1 to 999,999 (0 disables cutoff function).
Point below at which the display always
shows zero.
Decimal Point
Up to five decimal places or none:
d.ddddd
,
d.dddd
,
d.ddd
,
d.dd
,
d.d
, or
dddddd
Calibration
Range
Input Range
Minimum Span
Input 1 & 2
4-20 mA
0.15 mA
10 V
0.10 V
An error message will appear if the input 1
and input 2 signals are too close together.
Input
Impedance
Voltage ranges: greater than 500 k
Current ranges: 50 - 100
(depending on
resettable fuse impedance)
Input
Overload
Current input protected by resettable fuse,
30 VDC max. Fuse resets automatically
after fault is removed.
HART
Incompatible
The meter will interfere with HART signals
when present on both analog inputs. It is
recommended a single-channel meter be
used to support the use of HART devices in
both analog input loops.
