GE PanaFlow MV80, Руководство пользователя

Страница: 54 / 164

Chapter 2. Installation
42 PanaFlow™ MV80 & MV82 User’s Manual
2.6.4 Pulse Output Connections
The pulse output is used for a remote counter. When the preset volume or mass, as defined in the totalizer settings (see
“The Totalizer #1 Menu” on page 60 ) has passed through the meter, the output provides a 50 millisecond square pulse.
The pulse output is a normally-open, single-pole pulse output optical relay with a nominal 200 volt/160 ohm rating
(i.e., it has a nominal on-resistance of 160 ohms, and the largest voltage it can withstand across the output terminals is
200 volts). However, there are current and power specifications that must be observed. The relay can conduct a current
up to 40 mA and it can dissipate up to 320 mW of power. The relay output is isolated from the meter electronics and
power supply.
There are three connection options for the pulse output:
•
For AC or DC powered meters, use a separate 5 to 36 VDC power supply (see Figure 38 on page 43 ). Use this
option if a specific voltage is needed for the pulse output.
•
For DC powered meters only, use the flow meter power supply (see Figure 39 on page 43 ). Use this option if
the voltage at the flow meter power supply is an acceptable driver voltage for the connected load, taking into
account that the current used by the pulse load comes from the meter’s power supply.
•
For AC powered meters only, use the internal 24 VDC power supply (see Figure 40 on page 43 ). Use this
option if the voltage of the pulse output is the same as the voltage supplied to the circuit.