Ulvac UTM3400 Series, Instruction Manual

Page: 87 / 102

9.4 Power Failures
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9.4.1 Power Failure Counter-operation
Table 9-3 shows the counter-operations against power interruption which occurred while the
pump rotor is normally rotating.
Table 9-3 Counter-operations Against Power Supply Failure
(Note 1) The time can be changed to 2 seconds from 1 second via communication operation. Refer to
separate manual for serial communication.
(Note 2) For restarting after the power re-supply (restoration), push the RESET button.
(Note 3) The pin numbers are shown in Fig. 6-4 "Arrangement of Remote-control Connector Pins".
(Note 4) Actions can be changed via communication operations. Refer to Section 6.7 "Remote-control
Connector".
Interruption time 1 second or less (Note 1) Over 1 second (Note 1)
Interrupt/re-supply During interruption After re-supply During interruption After re-supply
Pump status
Magnetic levitation
Levitation goes on Levitation goes on Levitation goes on Levitation goes on
Run Decelerates Returns to before
power-failure running
condition Decelerates Decelerates
(Note 2)
Indicator lamp
ROTATION
Lamp ON goes on Lamp ON goes on Lamp ON goes on Lamp ON goes on
STATUS Before-power-failure
indication goes on Before-power-failure
indication goes on Orange lamp turns on Orange lamp ON
goes on
Remote-control output signals (Note 3)
ROTATION
Pin no. (17)-(19)
(18)-(19)
"CLOSE" goes on
"OPEN" goes on "CLOSE" goes on
"OPEN" goes on "CLOSE" goes on
"OPEN" goes on "CLOSE" goes on
"OPEN" goes on
NORMAL
Pin no. (11)-(13)
(12)-(13)
Before-power-failure
condition goes on
Before-power-failure
condition goes on Before-power-failure
condition goes on
Before-power-failure
condition goes on Contact open
Contact close
"OPEN" goes on
"CLOSE" goes on
ACCELERATION
Pin no. ( 8 )-(10)
( 9 )-(10)
Before-power-failure
condition goes on
Before-power-failure
condition goes on Before-power-failure
condition goes on
Before-power-failure
condition goes on Contact open
Contact close
"OPEN" goes on
"CLOSE" goes on
BRAKE
Pin no. (14)-(16)
(15)-(16)
Before-power-failure
condition goes on
Before-power-failure
condition goes on Before-power-failure
condition goes on
Before-power-failure
condition goes on Contact close
Contact open
"CLOSE" goes on
"OPEN" goes on
REMOTE
Pin no. (20)-(22)
(21)-(22)
Before-power-failure
condition goes on
Before-power-failure
condition goes on Before-power-failure
condition goes on
Before-power-failure
condition goes on Contact open
Contact close
Return to Before
power-failure
Return to Before
power-failure
ALARM (Note 4)
Pin no. (27)-(28)
(26)-(28)
"CLOSE" goes on
"OPEN" goes on "CLOSE" goes on
"OPEN" goes on Contact open
Contact close
By resetting
Contact close
Contact open
WARNING (Note 4)
Pin no. (29)-(31)
(30)-(31)
"OPEN" goes on
"CLOSE" goes on "OPEN" goes on
"CLOSE" goes on "OPEN" goes on
"CLOSE" goes on
By resetting
"OPEN" goes on
"CLOSE" goes on