Pin Assignment / Conductor Coloring Connector Iii (4-Terminal); Metering Rates - Ecolab EMP KKS E60 Manuel D'utilisation

Technical Specifications
14.6.3

Pin assignment / conductor coloring connector III (4-terminal)

Connector for empty report, fault and stroke signal output:
WARNING!
At 115V/230 V, a simultaneous connection of contact 1+2 (alarm output) and
3+4 (stroke signal output) is generally not permitted.
14.7

Metering rates

Repeatable metering accuracy is approx. ± 3 % at minimum 30 % stroke length and
otherwise constant conditions. In order to balance the clearance, the stroke length
adjustment has to be based on the lower value towards the desired stroke length (= sense
of rotation to the right).
Due to the characteristics of the pump, higher output can be produced until the operating
temperature is reached.
Precise metering can be achieved provided the following items are adhered to:
n All metering-rate data is referred to measurements using water at 20° C, constant
supply voltage and the metering pump at operating temperature. The factory setting
for the metering rate (= setting accuracy) at a maximum metering back-pressure is
+ 5 - 15 % of the rated value.
n A pressure-maintenance valve (or metering valve) for generation of the most constant
possible counter pressure of not less than 0.005 MPa (0.5 bar) should be used in
order to obtain high metering accuracy in case of metering with unobstructed
discharge.
If there is pre-pressure on the suction side, the pressure difference between the
n
suction and the pressure sides must be at least 0.1 MPa (1 bar). The water column on
the metering pump must be protected by an appropriate valve arrangement.
NOTICE!
A pressure control valve or a metering value is not an absolutely hermetically
sealing shutoff device.
WARNING!
Dosierhubverstellung nur bei laufender Pumpe, wenn Hubeinstellschraube
entlastet ist.
417101442 Rev. 12-02.2019
Conductor
Pos. Assignment
coloring
1 brown Output low level warning, empty report, fault (+)
2 white Output low level warning, empty report, fault (-)
3 blue Output stroke signal (+)
4 black Output stroke signal (-)
Ä Chapter 7.2.3 'Connector assignment of slot II (5-terminal) Input
for pulse signal, standard signal, metering lock, batch and metering
monitoring ' on page 39
128