<4. WIRING>
4-9
IM 01E30D01-01EN
Selection of HART 5/ HART 7
Output Signal
Code
-E
-J
Ordering
Information
–
Specify “5” Specify “7”
HART Protocol
Revision
HART 5
HART 7
Selec-
tion
guide
Require-
ment for
HART 7
function-
ality
NO
YES
Be sure to
confirm the
protocol
revision of
the HART
configura
-
tion tool
shown in
Note 2.
Other
condi-
tions
Not avail-
able to
switch to
HART 7
protocol
after deliv-
ery.
Available
to switch
to HART
7 proto-
col after
delivery by
user-con-
figuration.
Available
to switch
to HART
5 proto-
col after
delivery by
user-con-
figuration.
Remarks
Note 1
Note 2
Note 2
Note 1: "-E" is HART5 exclusive model and will be terminated.
"-J" is recommended for HART communication.
Note 2: HART protocol revision for the device and HART
configuration tool
HART 7 communication is supported by FieldMate
R2.04 or later.
Protocol revision supported by HART
configuration tool
5
7
AXR, HART 5
Available
Available
AXR, HART 7
Not available
Available
(2) Pulse Output, Status Output, Alarm Output
One Output can be selected from pulse, alarm, or
status through the parameter setting.
Read Table 4.6.2 or Table 4.6.5 as wiring examples.
Digital Output:
Transistor contact output, open collector
Contact rating: 30 V DC, 120 mA DC
Low level: 0 to 2 V DC (Read Figure 4.6.4)
HIGH level
LOW level
0 V
0 to 2 V
F0417.ai
Figure 4.6.4 High and Low levels (transistor contact
output)
IMPORTANT
Precaution for Pulse Output
• As this is a transistor contact (insulated
type), give attention to proper voltage and
polarity when wiring.
• Do not apply a voltage larger than 30 V DC
or a current larger than 120 mA in order to
prevent damage to the instrument.
• When input filter constant of the electronic
counter is large in relation to the pulse width,
the signal will decrease and the count will not
be accurate.
• If the input impedance of the electronic
counter is large, an induction noise from
the power supply may result in inaccurate
counts. Use a shield cable or sufficiently
reduce the input impedance of the electronic
counter within the electromagnetic flowmeter
pulse output specification range.
• The load resistance for pulse output is
necessary. Read Table 4.6.3 or Table 4.6.6.
• Neither no load resistance nor too small
value of load resistance for pulse output will
give a damage to the instrument.
IMPORTANT
Precaution for Status Output and Alarm Output
• As this is a transistor contact (insulated
type), give attention to proper voltage and
polarity when wiring.
• Do not apply a voltage larger than 30V DC
or a current larger than 120 mA in order to
prevent damage to the instrument.
• This output cannot switch an AC load. To
switch an AC load, an intermediate relay
must be inserted as shown in Table 4.6.2 or
Table 4.6.5.
* The alarm output operates from open
(normal) to closed (alarm occurrence) in the
default value (as setup upon plant shipment).
Changes can be made via the parameter
settings.
