User manual
30
Section 2 MC-III™ EXP Flow Analyzer
Pulse Output
The pulse output is a solid-state relay. Each pulse represents a user-dened volume. Because the circuit is
isolated, it can be used in conjunction with any other feature on the MC-III EXP. A two-conductor cable from
the MC-III EXP to the remote location is required (Figure 2.13). The maximum current rating of the pulse
output circuit is 60 mA at 30 VDC.
A Zener diode (Part No. 1.5KE56CA) must be installed for CE approval.
For information on conguring the pulse output with the keypad, see Conguring the Pulse Output, page 43.
For information on conguring the pulse output with the interface software, see Conguring Pulse Output,
page 73.
TB1
PULSE
INPUT
RESET
INPUT
TFM
A&S
GND
T
B
3
EXT POWER
TB2
RS485
SLAVE
4-20
OUT
PULSE
OUT
6
-
3
0
V
D
C
J1
J2
RESET
SWITCH
BATTERY
Leave this
end of shield
disconnected.
POWER SUPPLY
5 to 30 VDC
*
Resistor may be included in pulse readout
device. Size the resistor to limit the current
to 60 mA.
*
PULSE READOUT
DEVICE
Figure 2.13—Pulse output wiring