36
SECTION 6
OPERATION
6.1
Overview
Do not turn off the power during pump operation.
6.1.1 Introduction : Operation Modes
When the power is input, the pump starts self-diagnosis.
When the result is normal, operation is enabled. When an abnormal condition is detected, the
ALARM lamp lights up in orange.
The pump can be started/stopped in a number of different ways ; using a switch, contact signal,
or communication.
However, the pump cannot be started/stopped using two or more of these ways at the same
time.
Determination of which start/stop instruction to be followed depends on the operation mode
selected.
There are three operation modes as listed below.
(1) LOCAL mode where switches on the control panel are used for control
(2) REMOTE mode where logic interface signals are used for control
(3) RS-485 mode where RS-485 communication is used for control
The pump starts in the REMOTE mode described in (2) when the power is turned on including
when recovering from a power failure.
Switch to an operation mode prior to starting/stopping the operation.
Transit between operation modes is shown in Fig. 6-1. The state of the POWER lamp is
different between the LOCAL and other modes, as shown in Table 6-1.
Hold down the RESET button to transit between the LOCAL and REMOTE modes.
To transit to a communication mode, send an online request via the corresponding
communication media.
CAUTION
Содержание UTM300B
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