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4.5 Hydraulic Connections
Figure 5
Thread hose(s) into outlet port(s) of the valve (see valve body for
port identification).
Connect the clamp (extend) hose to valve port "A".
Connect the unclamp (retract) hose to valve port "B".
If desired, a pressure gauge may be installed in valve port "GA"
or "GB".
Note: "GA" measures "A" port pressure, "GB" measures "B" port
pressure, "GP" measures pump pressure down stream of system
check. The pump pressure transducer is factory installed in the
"GP" port and must remain installed in this location to ensure
proper pump operation.
5.0 OPERATION
WARNING: Review sections 5.1-5.4 and 6.1-6.4 before
starting pump. Be sure that Dwell Mode operation and
functions are clearly understood before connecting unit
to power.
1.
Check the oil level of pump and add oil if necessary.
2.
Make sure the shipping plug has been removed and the
breather cap is installed. (See Section 4.1)
3.
Connect unit to power. Wait until "READY" is displayed
before pressing any button on shroud or pendant. Note:
During the boot sequence, the microcontroller identifies any
button operation as a potential malfunction and prevents the
motor from starting. Reset by disconnecting power for 30
seconds.
4.
For an overview of pump operation, including pendant
functions, refer to sections 5.1-5.4. For detailed LCD control
panel operation instructions, see sections 6.1-6.4.
5.1 Pendant Operation (see Figure 6)
Oil flow and motor operation are controlled by the pendant
buttons. The pump will run and the cylinder will clamp when the
pendant Up-Arrow button is pressed. The pump will run and the
cylinder will unclamp when the pendant Down-Arrow button is
pressed. Releasing either button at any time will stop the pump
and will relieve pressure in the hoses (see Fig. 6).
1.
Up Arrow = Motor On - Momentary Clamp
2.
Down Arrow = Motor On - Momentary Unclamp
3.
On/Off = Not Used (disabled)
Shroud On/Off = Not Used (disabled)
Up Arrow
®
Down Arrow
ON / OFF
(disabled - not functional)
Apply 1-1⁄2 wraps of Teflon tape
or other suitable sealant to the
hydraulic hose fitting, leaving the
first complete thread free of tape
or sealant as shown in Figure 5.
Figure 6
5.2 Foot Switch Option
(see Figure 7)
1.
Motor On - Momentary Clamp
2.
Motor On - Momentary Unclamp
Shroud On/Off = Not Used
(disabled)
5.3 Automatic Dwell Mode Operation
The Dwell Mode feature allows the pump to react automatically at
two user-defined pressure values, "PRESR A" and "PRESR B".
This feature can be turned on and off as desired. See the
following paragraphs for additional information. Also refer
to Section 6.2 for detailed Dwell Mode operation and setting
instructions.
1. Dwell Mode Off
The pump LCD control panel will display pressure as a
simple pressure gauge. No additional actions will be performed
regardless of PRESR A and PRESR B values.
2. Dwell Mode On
The pump will automatically de-energize the motor and valve
solenoid after the specified PRESR A or PRESR B value is
reached AND the specified dwell time (in seconds) has elapsed.
When the pump stops, pressure in hoses will drop to zero (0) so
that couplers can be disconnected from the pallet.
Note: "AUTO" is shown on the LCD screen when Dwell Mode is
turned-on. "READY" is shown when Dwell Mode is turned-off.
5.3.1 Overview of Dwell Mode
Before the PRESR A or PRESR B value is reached:
• Pendant Up-Arrow and Down-Arrow buttons will function
as described in Section 5.1.
After the PRESR A or PRESR B value is reached:
• Continuing to press and hold the Up or Down Arrow
button after the specified pressure value is reached will
activate the dwell timer. The LCD screen backlight will
begin flashing, and the pump will continue running until
the user-defined dwell time (1 to 60 seconds) has elapsed.
• To ensure proper clamping and unclamping, the Up or
Down Arrow button must remain depressed until the pump
stops.
• Releasing the Up or Down Arrow button will stop the
automatic cycle, and the LCD screen backlight will stop
flashing.
• If dwell time is set to zero (0), the pump will stop
immediately when the specified pressure value (PRESR A
or PRESR B) is reached.
Restarting the Automatic Cycle:
Releasing and depressing the pendant Up-Arrow or Down-
Arrow button will restart the automatic cycle.
IMPORTANT: Maximum system pressure is determined by the
relief valve pressure setting. When Dwell Mode is ON and pendant
Up or Down Arrow button is depressed, pressure will continue to
rise to the relief valve setting even after the specified pressure value
(PRESR A or PRESR B) is reached. To ensure proper operation
when using Dwell Mode, be certain that the PRESR A and PRESR B
values are set at least 200 psi [13,7 bar] BELOW the relief valve
pressure setting.
WARNING: Set pump to "DWELL OFF" and disconnect
electrical power to pump before working on pump or
hydraulic system.
4
Figure 7
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