Plc Connection - Graco InvisiPac Tank-Free HM25 Instructions - Parts Manual

PLC Connection

A PLC can control and monitor all items shown in the
dropdown menus on the System 1 screen in the Setup
screens.
Customer Input Dropdown Options
Option Description
Disable Not used.
Heater On/Off Turn on or off the heating system and
pump.
Channel 1, 2, 3, Enable or disable hose and gun heat-
or 4 Enable/Dis- ing for that individual channel.
able
Customer Output Dropdown Options
Option Description
Disable Not used.
System Ready Indicates when the system is up to tem-
perature and the pump is stalled at
pressure.
Error (Alarm) Indicates when there is an active alarm.
An active alarm will disable the heating
system and pump.
Error (Devia- Indicates when there is an active devia-
tion/Advisory) tion or advisory. An active deviation or
advisory will NOT disable the heating
system and pump.
Maintenance Due Indicates when the maintenance total
has reached the preset notification
value.
NOTE: All outputs are normally open when power is
OFF. For Error (Alarm) output, the contacts open when
an alarm occurs. For all others, contacts close.
3A2347ZAA
NOTE: The InvisiPac system ships with two
screw-terminal connectors that plug into MZLP
connectors H1 and H2. Connectors are located in a bag
on the inside of the electrical enclosure front access
door. To replace the connectors, order kit 24P176.
1. On the System 1 screen (in the Setup screens) select
the function of each input on MZLP connector H1 and
each output on MZLP connector H2.
2. Turn main power switch OFF.
3. Remove electrical enclosure front access door.
4. Route I/O cable through strain relief in electrical
enclosure. See Customer I/O Cable (S) in F
page 8.
5. Remove power from PLC.
6. Connect the PLC to connectors H1 and H2.
NOTE: Each connector has four signals. The MZLP
board specifies the input range for each signal. See the
following table for pin assignments.
F . 16: MZLP Board
IG
H1 - Customer Input
Signal Pin
1 1, 2
2 3, 4
3 5, 6
4 7, 8
Inputs: High: 10-30 Vdc, Low: 0-5 Vdc. Inputs function
without concern for polarity. Applying "high" voltage will
turn the heaters on and enable channels. Removing volt-
age will turn the heaters off and disable channels.
Outputs: 0-250 Vac, 0-30 Vdc, 2A.
Setup
. 1 on
IG
H1
H2
H2 - Customer Output
Signal Pin
1 1, 2
2 3, 4
3 5, 6
4 7, 8
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