Tacmina PW Series, Operation Manual

Page: 20 / 68

19
Installation
Electrical wiring
External operation and stop input
The pump can be turned on and off using signals from an external device such as an interlock or level switch.
The pump runs or stops while (5) and (6) are shorted (no-voltage contacts) or while (5)+ and (6)- (open collector) are
input.
To set the operation to be performed when the external operation and stop input signals are received, refer to the set-
tings list on page 32.
✽
The displayed settings blink while the pump is stopped by the stop input signal.
✽
If STOP has been selected, the pump will stop operating when the signal is input regardless of the setting.
✽
Even if OPERATION has been selected, the pump will not operate unless the external operation signal has been
input.
Signal input
●
About signal input (SIGNAL IN) terminals
a) Input of non-voltage contact signal to a pulse input-type model
Non-voltage contact pulses produced by devices such as the pulse generator-type flow meter system are input to
terminal numbers (4) and (6). In this case, no considerations are required with regard to polarity. Be sure to use a
pulse signal that has low chattering noise. The contact points of a general control relay are not appropriate.
b) Input of open collector (drain) signal to a pulse input-type model
The electric current direction of the contact points of semiconductor devices (such as open collector and open
drain devices) is fixed due to the characteristics of these devices. Connect the collector (drain) to terminal number
(4) and the emitter (source) to number (6).
c) Input of electric current signal to an analog input-type model
Connect the signal wires (DC4 to 20mA) to terminal number (4) to use it as the positive terminal and to number
(6) to use it as the negative terminal.
●
For details about signal specifications, see page 52.
Recommended protection devices
(1) Circuit protectors
(Protects the main power supply in the event of the pump problem)
Manufacturer Type
Mitsubishi Electric CP30-BA2P1-M3A
Fuji Electric CP32D/3
Matsushita Electric Works BAC201305
(2) Lightning arrestors
Use an arrestor that matches the power supply to be used. The recommended arrestor models for 100V and 200V are
indicated below.
Manufacturer
Type
For AC 100V For AC 200V
M-System Co. MA-100 MA-200
(3) Line filters, sealed transformers
Manufacturer Type
TDK RSHN-2003
08-32̲EM-127̲PW(E).indd 19 2014/11/17 11:43:55