PD2-6060
Helios Large Display Dual-Input Meter Instruction Manual
7
F4 Digital
Input Logic
Levels
Logic High:
3 to 5 VDC
Logic Low:
0 to 1.25 VDC
Relays
Rating
2 or 4 SPDT (Form C) internal and/or 4
SPST (Form A) external; 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 page 15 for details.
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/without clear
Pump alternation control (2 to 4 relays)
Sampling (based on time)
Off (disable unused relays and enable
Interlock feature)
Manual on/off control mode
Relay Reset
User selectable via front panel buttons
or digital inputs
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 (latching)
Note: Front panel button 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.
Isolated 4-20 mA Transmitter Output
Output Source
Input channels A or B, rate, total, or grand
total; channel C; max or min for channel A
or B; highest or lowest max or min of A
and B; set points 1-4; Modbus input; or
manual control mode
Scaling Range
1.000 to 23.000 mA for any display range
Calibration
Factory calibrated: 4.000 to 20.000 = 4-20
mA output
Analog Out
23.000 mA maximum for all parameters:
Programming
Overrange, underrange, max, min, and
break
Accuracy
± 0.1% of span ± 0.004 mA
Temperature
Drift
0.4 µA/
C max from 0 to 65
C ambient,
0.8 µA/
C max from -40 to 0
C ambient
Note: Analog output drift is separate from
input drift.
Isolated
Transmitter
Power Supply
Terminals I+ & R: 24 VDC
10%. May be
used to power the 4-20 mA output or other
devices. Refer to Figure 21 on page 19. All
models rated @ 40 mA max.
External Loop
Power Supply
35 VDC maximum
Output Loop
Resistance
Power supply Minimum Maximum
24 VDC
10
700
35 VDC
(external)
100
1200
RS485 Serial Communications Terminal
Compatibility
EIA-485
Connectors
Removable screw terminal connector
Max Distance
3,937' (1,200 m) max
Status
Indication
Separate LEDs for Power (P), Transmit
(TX), and Receive (RX)
Modbus
®
RTU Serial Comm Protocol
Slave Id
1 – 247 (Meter address)
Baud Rate
300 – 19,200 bps
Transmit Time
Delay
Programmable between 0 and 199 ms
Data
8 bit (1 start bit, 1 or 2 stop bits)
Parity
Even, Odd, or None with 1 or 2 stop bits
Byte-To-Byte
Timeout
0.01 – 2.54 second
Turn Around
Delay
Less than 2 ms (fixed)
Note: Refer to the Modbus Register Tables
for details.
Digital Input & Output Terminal
Channels
4 digital inputs & 4 digital outputs
Digital Input
Logic High
3 to 5 VDC
Digital Input
Logic Low
0 to 1.25 VDC
Digital Output
Logic High
3.1 to 3.3 VDC
Digital Output
Logic Low
0 to 0.4 VDC
Source
Current
10 mA maximum output current
Sink Current
1.5 mA minimum input current
+5 V Terminal
To be used as pull-up for digital inputs
only. Connect normally open pushbuttons
5 V & DI 1-4.
WARNING!
DO NOT use +5 V terminal
to power external devices.
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