Q9 Flowsaver Theory Of Operation; Stage 1 Function; Stage 2 Function; Stage 3 Function - Toshiba Q9 Installation And Operation Manual

Q9 F
LOW
The Q9 F
defined by the suffix A, C, or E as shown in the part numbering convention on
In the description below, system operation for the Q9 F
where the referenced function is not supported by the A or C typeform. The following explanation
targets the Q9 F
Note:
Note:
Initially all switches are open and the normal states of all relays are as indicated in

Stage 1 Function

Power is applied to stage one via the Control Power Transformer (CPT). The 120 VAC signal is
applied to the Shunt Trip circuit and LED 5 (Control Power). LED 5 illuminates and if the LS switch
is open (enclosure door is closed), the system is enabled for normal operation.
If the LS switch is closed (enclosure door is open), the Motor Circuit Protector (MCP) is opened via
the Shunt Trip function (see
terminated. The LS switch may be connected to an ancillary circuit that can perform a system shutdown
in the event of a system malfunction or an ancillary circuit status change (e.g., door opens, etc.). The LS
switch is used as a door interlock in this example.

Stage 2 Function

Stage two has two operating modes: Test operation and INV operation (K2 energized).
If the Test switch (SW1) is closed or if K2 is energized via SW2 (SW2 to INV, OL closed [open =
overload], and CIA-to-B closure required) the K1 relay is energized and the states of the K1 contacts
change.
LED1 illuminates (if in the Test mode) and the 1M contactor energizes which closes the 1M contacts
(see Figure 7 on pg.

Stage 3 Function

The closures of the OL contacts of the motor overload relay and the CIA/B (Customer Interface)
contacts are required to provide 120 VAC to stage 3.
The CIA/B contacts are configured by the user such that the system is disabled in the event that any
user-selected function changes state (i.e., alarm is initiated, door is opened, etc.). CIA/B contacts may
be jumpered if unused.
The three positions of SW2; Off, INV, and BYP, are described below.
Off — K2 and K3 remain in the normal state.
INV — Energizes K2 which turns off LED 1 (Test Mode) (if on), illuminates LED 2 (INV Mode),
opens K2 at stage 3, closes K2 at stage 4, and completes the ST terminal path via PCB 11. The
Q9 FlowSaver Installation and Operation Manual
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S Theory of Operation
AVER
S ASD system is available in three configurations. The system configuration type is
LOW AVER
S E configuration.
LOW AVER
Reference Figure 1 on pg. 13
The 200-volt 30 HP and 40 HP Q9 F
ASD component and the Bypass Box provided and mounted as separate items
(e.i., the ASD is sold separately). The same is true for the 400-volt 50 – 100 HP Q9
F S ASD Systems.
LOW AVER
The Integrated Enclosure and the BYP Series systems operate in the same manner —
as described below.
Motor Protection on pg.
29; 3-phase input is applied to the ASD).
S
LOW AVER
and Figure 7 on pg. 29 for the following explanation.
S ASD systems are designed with the
LOW AVER
15) and the 3-phase input voltage to the system is
pg. 35.
A and C types differ from the E type
Figure 1 on pg. 13.
11