Programming
Page 30
May 2020
DSY-PM-01378-EN-08
Totalizer Pulse Output*
The
PulsOut
parameter can be
Enabled
or
Disabled
� When
Enabled
, the output generates
a fixed width 30 mS duration, pulse every time the least significant digit of the totalizer
increments� The amplitude of the pulse is dependent on the voltage level of the supply
connected to the pulse output and is limited to a maximum 28V DC�
The B2900 monitor provides two types of totalizer pulses� The basic open drain FET output,
, provides a ground referenced output pulse that swings between about 0�7V DC
and V
CC
�
Freq. In
4-20mA
Iso Total Pluse
RS485 Gnd
Setpoint 1
Setpoint 2
Gnd
+
–
+
–
+
–
Total Reset
Total Pluse
Signal Gnd
Mag
Pulse
Iso
OC
Low
High
RS485 B (–)
RS485 A (+)
Input
Total P
ulse
Sig
nal
TB1
O
pen
Drain FET
Total Pulse Output
2.2 …10k
Pullup
Resistor
V
CC
Internal
100 mA
Maximum
Figure 12: Open drain connections (NEMA 4X)
The isolated pulse output (ISO),
, is an open collector output with the emitter of
the transistor connected to the negative output terminal and is not referenced to ground�
This output is optically isolated from the input signal for systems that require a totally
isolated output pulse�
JP1
JP2
JP3
Input
Total P
ulse
Sig
nal
P1
Freq. In
4-20mA
Iso Total Pluse
RS485 Gnd
Setpoint 1
Setpoint 2
Gnd
+
–
+
–
+
–
Total Reset
OC Total Pluse
Signal Gnd
TB1
Mag
Pulse
Iso
OC
Low
High
RS485 B (–)
RS485 A (+)
Iso
lated Output
Total Pulse
Internal
–V
2.2…10k
Pullup
Resistor
V
CC
100 mA
Maximum
Figure 13: Opto-isolated open collector connections (NEMA 4X)
