EBARA A07V, Instruction Manual, Page: 38 / 69

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*5 When Dipswitch No. 7 is OFF (Normal Mode), a decrease in dilution N
2
flow will cause
an output on Pin No. 39. When Dipswitch No. 7 is ON (Dilution 0 Mode), this same
output on Pin 39 indicates that the dilution N
2
selector valve is open.
*6 Pins No. 2 (BP Start), 5 (BP Stop), 12 (BP Operation), 29 (BP Motor Temp.),
31 (BP Overload), 42 (BP Current) apply to Models A70W and A30W.
Only Model A07V uses Pin No. 45 (Bearing Temperature).
CAUTION
Do not wire vacant pins.
CAUTION
Apply 12V DC power for input signals on the pump side. Do
not apply this voltage on the equipment side.
The output signals are generated from an open collector
output. Apply a voltage not exceeding 50V DC on the
equipment side.
CAUTION
Wire all signals with the correct polarity
(SIGNAL/COMMON).
CAUTION
When output signals energize an inductive load, such as a
relay, insert a diode (100V. 1A class) to absorb the back
electromotive force from surge currents.
4.4 Operation Mode
Set the dipswitches on the control panel in accordance with the conditions (Table 4.6).
Table 4.6 Dipswitch Settings
No. Mode Off On
1 RS232C Data Length 7bit 8bit
2 Service observation Always Operating period only
3 Buzzer Not used Used
4 Operation switched to remote According to signal Automatically stop
5 Remote start signal Alternating Momentary (Pulse)
6 ----- ----- -----
7 Dilution N
2
With dilution Without dilution
8 BP operation Automatic According to signal
When using the RS232C communication port to monitor pump status, select a Data Length
of either 7 bits or 8 bits.
Dipswitch No. 2 configures observation of cooling water and N
2
gas flow as either "always" or
"operating period only." Even when "operating period only" is selected, observation of
cooling water flow continues for 15 minutes after pump stops.
Dipswitch No. 3 selects Buzzer usage in ALARM / TRIP condition.
In remote mode, select pump operation “according to signal” or “automatically stop” with
Dipswitch No.4.
EBARA Corporation