Precision Digital Corporation Helios PD2-6262, Инструкция по эксплуатации

Страница: 11 / 61

Helios PD2-6262 Dual Analog Input Rate/Totalizer
Instruction Manual
11
Dual Rate/Totalizer
Rate Display
Indication
-99999 to 999999, lead zero blanking.
Total Display
& Total
Overflow 0 to 999,999; automatic lead zero
blanking.
Up to 999,999,999 with total-overflow
feature. “
oF
” is displayed to the left of total
overflow and
▲ LED is illuminated.
Total
Decimal Points Up to five decimal places or none:
d.ddddd
,
d.dddd
,
d.ddd
,
d.dd
,
d.d
, or
dddddd
Total decimal point is independent of rate
decimal point. Channel A and B decimal
points programmed independently.
Dual Totalizer
Calculates total for channels A and B
based on rate and field programmable
multiplier to display total in engineering
units. Time base must be selected
according to the time units in which the
rate is displayed. Channel A and B
totalizer parameters programmed
independently.
Totalizer
Rollover Totalizer rolls over when display exceeds
999,999,999. Relay status reflects
display.
Total
Overflow
Override Program total A or B total reset for
automatic with 0.1 second delay and set
point 1 for 999,999
Totalizer
Presets Four, user selectable under setup menu.
Any set point can be assigned to channel
A or B total or grand total (or C) and may
be programmed anywhere in the range of
the meter for total alarm indication.
Total Reset
Password Total and grand total passwords may be
entered to prevent resetting the totals or
grand totals from the front panel.
Total & Grand
Total Reset Via front panel button, external contact
closure on digital inputs, automatically via
user selectable preset value and time
delay, or through serial communications.
Channel A and B total and grand total
reset parameters programmed
independently.
Programmable
Delay
On Release 0.1 and 999.9 seconds; applied to the
first relay assigned to total or grand total.
If the meter is programmed to reset total
to zero automatically when the preset is
reached, then a delay will occur before
the total is reset.
Non-Resettable
Total The grand totals can be programmed as
non-resettable totals by entering the
password “050873”. Both channels are
set to non-resettable when this password
is entered.
•
Once the Grand Total has been programmed as “non-
resettable” the feature
CANNOT be disabled.
Relays
Rating 4 SPDT (Form C) internal and rated 3 A
@ 30 VDC and 125/250 VAC resistive load;
1/14 HP (
≈
50 W) @ 125/250 VAC for
inductive loads
Noise
Suppression Noise suppression is recommended for each
relay contact switching inductive loads; see
Switching Inductive Loads page on page 20
for details.
Relay
Assignment Relays may be assigned to channel A or B
rate, total, or grand total; channel C; or
Modbus control.
Deadband 0-100% of span, user programmable
High or Low
Alarm User may program any alarm for high or low
trip point. Unused alarm LEDs and relays
may be disabled (turn off).
Relay
Operation
•
Automatic (non-latching) and/or manual
reset
•
Latching (requires manual
acknowledge) with or without clear
•
Pump alternation control (2-4 relays)
•
Sampling (based on set point and time)
•
Off (disable unused relays and enable
Interlock feature)
•
Manual on/off control mode
Relay Reset
(Acknowledge) User selectable via front panel button, F4
digital input, external contact closure on
digital inputs, or through serial
communications.
1. Automatic reset only (non-latching),
when the input passes the reset point.
2. Aut manual reset at any time
(non-latching)
3. Manual reset only, at any time
(latching)
4. Manual reset only after alarm condition
has cleared (L)
Note: Front panel button, F4 terminal at
back of meter or digital input may be
assigned to acknowledge relays
programmed for manual reset.
Time Delay 0 to 999.9 seconds, on & off relay time
delays. Programmable and independent for
each relay
Fail-Safe
Operation Programmable and independent for each
relay.
Note: Relay coil is energized in non-alarm
condition. In case of power failure, relay will
go to alarm state.
Auto
Initialization When power is applied to the meter, relays
will reflect the state of the input to the meter.
USB Connection
Function Programming only
Compatibility USB 2.0 Standard, Compliant
Connector
Type Type B receptacle
Cable USB Type A-B cable
Driver Microsoft
®
Windows
®
XP/Vista/7/8/10
Power USB port provides power to the meter.
DO NOT apply AC or DC power to the
meter while the USB port is in use.