Nexen Electronic Over Load Protection System Controller 964403 - Manual (Page 6)

6 FORM NO. L-20309-A-1099
OPERATION
DANGER
The “Activate Controller” push button does not disconnect the power source from the OPS controller. If the controller
is supplied with 115 or 230VAC, this supply must be disconnected at its source before opening the enclosure cover
or servicing the printed circuit board. Failure to do so can result in severe injury or death.
Before working on a Nexen OPS equipped clutch, deactivate the OPS controller by using the “Activate Controller”
push button.
If a lockout/tagout is required, lockout/tagout the input power source (+12VDC or 115/230VAC) for the OPS controller.
1. Press the Activate Controller push-button (See Figure
7). Verify the push-button remains depressed and built-in
indicator lights up. This supplies DC power to the control
logic and sensors.
2. Press the Engage push-button to engage the clutch (See
Figure 7). Verify the push-button returns from being
depressed and its built-in indicator lights up. When this
push-button is depressed, the K1 relay will energize and
engage the clutch while the K2 relay deenergizes. A four
second delay will occur before the OPS controller begins
checking for slip. This delay allows time for the clutch to
engage the load and prevents nuisance triping at startup.
3. Press the Disengage push-button to disengage the clutch
(See Figure 7). Verify push-button returns from being
depressed and its built-in indicator lights up. When this
push-button is depressed, the K1 relay will deenergize
and disengage the clutch while the K2 relay will energize.
K2 can be used for an external alarm or indicator. Anytime
a slip is detected, the OPS controller will automatically
perform the same function as depressing the Disengage
push-button.
4. Press the Activate Controller push-button while it is
depressed to turn off the OPS controller’s logic circuits
and sensors . Verify push-button returns from being
depressed and all indicator lights turn off.
FIGURE 7
R