Led Display Indicators - Graco BDS Instructions-Parts List Manual

Voltage Input Selector
Header (factory set for
120 or 220 VAC power)
1/4 Amp Input Fuse
Rapid Exchanger
Solenoid Valve
(RESV) Relay
RESV Factory
Wiring Terminal
Figure 11 – 120/220 VAC Electrical Power Control Unit Power Module
WARNING
FIRE AND EXPLOSION HAZARD
The controller is designed for use in a
non-hazardous location as defined in the
National Electrical Code (USA). To install
the Batch Dispense equipment in a
Class 1, Division 1, Group C and D
environment, the X-purge option must be
properly installed.
X-Purge Option
Isolated Coil Voltage
Transformer
20 Amp Enclosure
Power Fuse
Power Control Switch
Cable Header
Power Module
Wiring Terminal

LED Display Indicators

Power Off: Enclosure Power Relays De-energized
Power On: Enclosure Power Relays Energized
Safe Pressure: Enclosure Pressure > 0.15" or
0.50" w.c.
Rapid Exchange: Enclosure Pressure > 2.0" w.c.
Timer Running: Rapid Exchanger Timer Activity
Alarm Activity: Enclosure Pressure < 0.15" w.c.
Bypass Engaged: Control Bypass Active – Condi-
tional Bypass and Unconditional Bypass Modes
Latch Engaged: Power Relay Latch Active – Power
Latching Mode
Voltage Regulators
Pressure Switch
Cable Header
Logic Module
Cable Header
Redundant Safe
Pressure Relay
Redundant Rapid
Exchange Relay
20 Amp Alarm Relay
20 Amp Enclosure
Power Relays
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