Helios Large Display Dual Analog Input Rate/Totalizer Instruction Manual
PD2-6262
4
Table of Figures
Figure 1. Meter Mounting Holes ............................ 10
Figure 2. Meter Dimensions - Side View ............... 10
Figure 4. Vertical Pipe Mount Assembly ............... 11
Figure 5. Horizontal Pipe Mount Assembly ........... 11
Figure 6. Transmitter Supply Voltage Selection.... 12
Figure 8. Power Connections ................................ 13
Figure 11. Voltage Input Connections ................... 14
Figure 12. Relay Connections .............................. 15
Figure 13. AC and DC Loads Protection .............. 15
Figure 14. Low Voltage DC Loads Protection ...... 15
Figure 15. RS-422 or RS-485 Wiring .................... 16
Figure 16. RS-485 Two-Wire Multi-Drop Wiring ... 17
Figure 18. Three-Wire RS485 Connection ........... 17
Figure 19. Digital Input and Output Connections . 18
Figure 20. F4 Digital Input Connections ............... 18
Figure 21. 4-20 mA Output Connections .............. 19
Figure 22. Interlock Connections .......................... 19
Introduction
The Helios PD2-6262 is a multi-purpose, easy to use, large-display dual-input rate/totalizer ideal
for flow rate, total, and flow control applications. It features large 1.8 inch superluminous
sunlight-readable LED digits, which can be read from up to 100 feet away. It is housed in a
water-resistant, field mountable IP65 rated enclosure for convenient indoor and outdoor
installation.
The meter accepts current and voltage signals (e.g. 4-20 mA, 0-10 V) from an analog output
flowmeter. The rates, as measured by the flowmeters, are automatically aggregated into
cumulative totals and grand totals which can be displayed with the rates.
Various math functions may be applied to the rate, total, and grand total of the two channels,
including addition, difference, absolute difference, average, weighted average, multiplication,
division, minimum, maximum, draw, ratio, and concentration. This is in addition to the signal
input conditioning functions (linear, square root, programmable exponent, or round horizontal
tank calculations).
The displays, relays, and the analog output may be assigned to the rate, total, or grand total of
input channels A or B, or math result channel C. Three of the programming buttons can be set
for custom operation.
A fully loaded Helios PD2-6262 dual-input rate/totalizer comes with four (4) SPDT relays, a 4-20
mA output, two 24 VDC power supplies, five (5) digital inputs and four (4) digital outputs, and
RS485 serial communications. The four relays can be used for alarm indication or process
control applications. The 4-20 mA isolated output, Modbus RTU serial communications, and
digital I/O features make the Helios an excellent addition to any system.
