Flowserve KW941 - Manual (Page 10)

KW941 Pump Power Monitor USER INSTRUCTIONS ENGLISH 71569285 02-12
Page 10 of 24 flowserve.com
Table 4.1 Display/Control Unit Connection Terminals (TS1)
Screw # Description Notes
1 Ground Safety ground to connect units metal frame to earth ground
2 VAC Input
AC control voltage, 110 VAC from control voltage transformer (220/240
VAC optional)
3 VAC Input
AC control voltage, 110 VAC from control voltage transformer (220/240
VAC optional)
4 Hi Alarm NO
The normally open (power on, not tripped) Hi Alarm relay contact
between TS1 screw # 4 and # 6. This contact will be closed upon a Hi
Alarm condition or loss of control voltage.
5 Hi Alarm NC
The normally closed (power on, not tripped) Hi Alarm relay contact
between TS1 screw # 5 and # 6. This contact will open upon a Hi
Alarm condition or loss of control voltage.
6 Hi Alarm common The common screw # for the HI Alarm relay contacts.
7 Lo Alarm NO
The normally open (power on, not tripped) LO Alarm relay contact
between TS1 screw # 7 and # 9. This contact will close upon a LO
Alarm condition or loss of control voltage.
8 Lo Alarm NC
The normally closed (power on, not tripped) LO Alarm relay contact
between TS1 screw # 8 and # 9. This contact will open upon a LO
Alarm condition or loss of control voltage.
9 Lo Alarm common The common screw # for the LO Alarm relay contacts.
10 Reset +
Remote reset terminal. A momentary contact between TS1 # 10 and #
11 will reset the alarm relay contacts.
11 Reset -
Remote reset terminal. A momentary contact between TS1 # 10 and #
11 will reset the alarm relay contacts.
12 4-20 mA + Positive connection for the 4-20 mA output function (optional).
13 4-20 mA - Negative connection for the 4-20 mA output function (optional).
14 Current Sensor Input Current sensing toroid lead connection.
15 Current Sensor Input Current sensing toroid lead connection.
4.2.2 Current Sensor Set Up
The current senor (toroid) is shipped inside
the KW941 underneath the wiring compartment
cover.
NEVER MOVE JUMPERS WHEN
POWER IS ON!
When properly installed, the current sensing toroid
(see figure 4.4) normally is located inside the motor
starter panel with one of the three phase motor power
leads passing through its center one or more times.
The sensor's output leads are then connected to the
KW941 Display/Control module using an appropriate
conduit. Figure 4.4
To install the current sensor:
1)
Determine the required KW941 Full Scale Power
(FS) by calculating your motor's required INPUT
Power:
2)
Efficiency Motor
Power Nameplate Motor
Power Input
_
_ _
_
=
EXAMPLE:
91 . 0
10
_
HP
Power Input
=
= 10.98 HP
3) Locate your motor voltage in Table 4.2 by
reading down the Motor Volts column.
4) Read across the table row identified by your
motor voltage to locate the smallest KW941 Full
Scale Power value that is greater than or equal
to the motor's Input Power found in step 1. This
will be the KW941 Full Scale Power (FS).
Record this value on the configuration worksheet
in Section 8 of this manual.
If the motor's Input Power exceeds the FS
values listed in Table 4.2, use Table 4.3.
Using a FS value larger than required
will result in decreased sensitivity.