Technical data

12 312013
Installation
Terminals
Connector J1 terminals are numbered 1 through 4.
Connector J2 terminals are numbered 1 through 8.
Terminal definitions and typical wiring connections are
shown in figures 3 to 4 on pages 9 to 10.
J1 – 1 and 2 External Power
External power is supplied to these terminals. Terminal
1 is the positive connection. The external power con-
nection supplies power for the Informer display’s
internal circuitry. See the Technical Data on page 38
for details.
An external power supply is required for operation
when any of the external inputs or outputs described
below are used. This includes: external alarms, exter-
nal batch reset, remote mounted meter, and network-
ing with a computer. Battery operation can only be
used with the meter mounted option (Model 243312).
If Graco Power Supply 195638 is used:
For North American power connection, select a power
supply cord that fits the following requirements:
D UL Listed and CSA Certified
D 18 AWG
D Terminated in a molded on plug cap rated
125 V, 15 A
D Minimum length of 6 ft (1.8 m)
For European power connection, select a power supply
cord that is internationally harmonized and fits the
following requirements:
D Marked “<HAR>” 0,75 mm
2
minimum
mm
2
wire
D Rated 300 V
D PVC insulated jacket
D Molded on plug cap rated 250 V, 10 A
J1 – 3 and 4 RS–485
The Modbus RS–485 communication signals are
connected to these terminals. Terminal 3 is the B
signal and terminal 4 is the A signal. Due to very low
power RS–485 transceivers, the Informer should not
be directly connected to a terminated RS–485 network.
If terminators are present on the network, an isolator/
repeater should be used to isolate the Informer from
the rest of the network. The maximum cable length
that can be connected to the Informer’s RS–485 port is
approximately 1200 feet. Isolator/repeaters may be
used to extend the entire RS–485 network length and
the number of units on the network. Contact Graco
customer service for more information.
J2 – 1 and 2 Batch Reset
An external signal applied to this input will reset the
Batch Totalizer to zero if the totalizer is a type t1 or t3,
or it will preset the Batch Totalizer if it is a type t2 (see
setup parameters for details, page 17). Terminal 1 is
the positive connection. The input is internally current
limited. See the Technical Data on page 38 for details
on input signal specification.
J2 – 3 and 4 Pulse Input
An external signal applied to this input will increment
the internal pulse counter of the Informer display.
Terminal 3 is the positive connection. The internal
pulse counter is used to increment the Totalizers
viewed by the user. The rate of the Totalizer incre-
ments are determined by the setup parameters. The
input is internally current limited. See the Technical
Data on page 38 for details on input signal specifica-
tion.
J2 – 5 and 6 Batch Alarm
The Batch Alarm output is a signal that is turned on by
the Informer if a target value is set for the Batch Total-
izer and the Batch Alarm output is enabled in the setup
parameters. The output is a solid-state device, with
terminal 5 as the positive connection. The output is not
internally current limited so you should ensure that the
output current specification is not exceeded. See the
Technical Data on page 38 for details on output signal
specification.
J2 – 7 and 8 User Alarm
The User Alarm output is a signal that is turned on,
based on the parameters that are configured during
setup of the Informer display. The output is a solid-
state device, with terminal 7 as the positive connec-
tion. The output is not internally current limited so you
should ensure that the output current specification is
not exceeded. See the Technical Data on page 38 for
details on output signal specification.