Ametek MX Series - Figure 9-8: Emergency Screen; Table 9-5: Normal Frequency Transient Sequence; Table 9-6: Normal Frequency Variation Sequence

User Manual – Rev BE AMETEK Programmable Power
MX Series 262
FREQUENCY TRANSIENTS (GROUP 1 ONLY)
Se q . No
Frequency
Ti me
1 400 5 Minutes
2 440 150msec
3 400 5 Sec.
4 350 150msec
5 400 5 Sec.
Table 9-5: Normal Frequency Transient Sequence
This test applies to Group 1 only. At 115 volts, change the frequency per
sequence listed in Table 9-5. The test will cycle 5 times starting from sequence
2.
FREQUENCY VARIATION (GROUP 2 AND 3 ONLY)
Initial Frequency
Sl e w r a t e
Final Frequency
Se q . No
Gr o u p 2
Gr o u p 3
Hz/ Se c
Gr o u p 2
Gr o u p 3
1 360 360 100 650 800
2 650 800 100 360 360
3 360 360 Pause 5 sec 360 360
Table 9-6: Normal Frequency Variation Sequence
This test will apply to Group 2 and 3 only. At 115 voltage, the frequency is set
to 360Hz for 5 minutes. The frequency is slowed per sequence listed in Table
9-6. The test will cycle 3 times. The frequency will return to nominal after the
test is completed.
9.3.1.5.2 EMERGENCY TEST
From the DO160 MENU scroll to the EMERGENCY AC entry using the up and
down cursor keys. Press the ENTER key to select the EMERGENCY screens. The
screen will appear as shown in Figure 9-8.
Figure 9-8: Emergency Screen
The EMERGENCY SCREEN has the following tests:
• VOLT FREQ MIN
• VOLT FREQ MAX
• VOLT UNBALANCE
The above tests can be selected by scrolling to the highlighted selection using
the up and down key and the ENTER key to start the selected test.