Timer Descriptions & Functionality
PL, VP & Standard (Basic) Whisper® Loader Models:
T1: Run Time (Filling Duration)
T2: (Not used)
T3: Dump Time (Discharge Duration)
T4: Pulse-Off Time (Duration between Pulses) for PL & VP (not used on Standard model)
PLVP Whisper® Loader Models:
T1: Proportioning Time (Filling Duration), Virgin/Product 1 Material
T2: Proportioning Time (Filling Duration), Regrind/Product 2 Material
T3: Dump Time (Discharge Duration)
T4: Pulse-Off Time (Duration between Pulses)
Optional Set-up:
On-Line/Off-Line Pulse Jumper Settings for the PLC Control Module to control the Whisper® Loader’s Vibra-Pulse™
Filter-Cleaning System. PLVP & VP Model Whisper® Loaders are set for On-Line Pulse and PL models are set for Off-
Line Pulse. For factory default jumper settings see Figure 2-3 diagrams below.
Caution: Refer to Wiring Diagram provided in your Whisper® Loader Operating Manual as the applicable Input Contacts
may vary from that shown below. The Wiring Diagram supplied with the Loader will identify the actual jumper location &
related input terminal & wire numbers.
On-Line Pulsing occurs while the system is in the Conveying or Run Cycle (pulses the filters during the Conveying
cycle), Off-Line Pulsing occurs while the system is in the Dump Cycle (pulses filters during the Dump cycle).
DANGER! Prior to performing ANY service or repairs LOCK OUT and TAG OUT electrical power & de-energize
compressed-air sources.
To set On-Line Pulsing: Add Jumper wire from Wire
#4 Terminal (L1 on the PLC Controller) to Wire #11
Terminal (I-4 on the PLC Controller).
To set Off-Line Pulsing: Add Jumper wire from Wire
#4 Terminal (L1 on the PLC Controller) to Wire #9
Terminal (I-3 on the PLC Controller).
Note: There are no physical wires at either I-3 or I-4
terminals other than the Jumper wire; wires depict-
ed are for illustration purposes only.
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