Graco HydroShield WABL00, Инструкция - Каталог запасных частей

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Installation
Wire Wire Wire the the the System System System Stop Stop Stop Digital Digital Digital Input Input Input
The System Stop Digital input provides a means to
signal the HydroShield system to stop. This normally
open contact turns the system off when activated.
If the input is read as CLOSED, it stops system
operation and puts the system into Off mode. If the
input is read as OPEN, the system operates normally.
Prepare the electrical controls for service.
Follow the steps in
Prepare the Electrical Controls
for Service, page 105 .
The System Stop Digital input uses an optocoupler
to protect the HydroShield controls from outside
voltages.
Optocoupler Optocoupler
Optocoupler Port
Port
Port
Connect Connect
Connect to
to
to
13+
14
Control module
A1+
A2–
External device
or PLC
Apply the 24 VDC signal to A1+ and GND to A2–.
Only one A2– port needs to be connected to GND, as
the two ports labeled A2– are connected internally.
Function Function Function A1+ A1+ A1+ (relative (relative (relative to to to A2–) A2–) A2–)
System Stop: Digital
activated (system stop)
24 VDC
System Stop: Digital
inactive (system run) Less than 13.5 VDC
Install Install Install the the the Optional Optional Optional System System System Status Status Status
Output Output Output
The optional System Status Output provides a means
to signal connected devices that the HydroShield is
running.
The optional System Status Output optocoupler does
not come pre-installed and must be purchased and
installed separately. Install kit 24Z226 to use the
System Status Output.
The optional System Status Output is inactive when
the system is in Off mode. The optional System
Status Output is active in all other operation modes.
The System Status Output uses an optocoupler
to protect the HydroShield controls from outside
voltages.
• Optocoupler ports A1+ and A2– are wired to the
control module.
• Optocoupler ports 13+ and 14 are wired to the
external device or PLC.
For active-low signals/sourcing input: Connect GND
to 14. Assuming the input signal is at non ground,
monitor when 13+ is connected to GND to tell when
the System Status output is active.
For active-high signals/sinking input: Connect 24
VDC to 13+. Monitor when 14 is connected to 24
VDC to tell when the System Status Output is active.
Function Function Function A1+ A1+ A1+ (relative (relative (relative
to to to A2–) A2–) A2–)
PLC PLC PLC
System Status
Output Active
24 VDC 13+ and 14
connected
System Status
Output Inactive
Less than 13.5
VDC
13+ and 14
not connected
1. Prepare the electrical controls for service. Follow
the steps in
Prepare the Electrical Controls for
Service, page 105 .
2. Mount the optocoupler (432) to the DIN rail (436)
to the right of the other pressure switch(s).
26 3A8493A