DAB PUMPS PWM 201, Инструкция по установке и обслуживанию

Страница: 110 / 635

ENGLISH
108
6.6.10 CF: Carrier frequency
This sets the carrier frequency of the inverter modulation. The value set as default, is the correct value in most cases, and therefore
modifications are not recommended unless fully aware of the changes made.
6.6.11 AC: Acceleration
This sets the speed of variation with which the inverter varies frequency. This acts both on the start-up phase and during control. In
general, the pre-set value is optimal, but in the event of problems during start-up or HP errors, it can be modified or reduced as
required. Each time this parameter is modified, it is advisable to check that system control is still efficient. In the event of problems of
oscillation, lower the GI and GP gain values; see paragraphs 6.9.4 and 6.6.5. A reduction to AC will slow down the inverter.
6.6.12 AE: Enabling the anti-blocking function
This function serves to avoid mechanical blockages in the event of prolonged disuses; it acts by periodically activating the pump in
rotation.
When this function is enabled, every 23 hours the pump complete an unblocking cycle lasting 1 minute.
6.6.13 Setup of auxiliary digital inputs IN1, IN2, IN3, IN4
This section shows the functions and possible configurations of the inputs by means of parameters I1, I2, I3, I4. For electrical
connections, see section 2.2.4.2.
The inputs are all the same and all functions can be associated with each. The parameter IN1..IN4 enables the user to associate the
required function with the input of the same name.
Each function associated with the inputs is explained in more detail further in this section.
Table 22 summarises the functions and various configurations.
The default settings are those in Table 21.
Default settings of inputs
IN1, IN2, IN3, IN4
Input Value
1 1 (float NO)
2 3 (P aux NO)
3 5 (enable NO)
4 10 (low pressure NO)
Table 21: Default settings of inputs
Summary of possible configurations of digital
inputs IN1, IN2, IN3, IN4 and relative operation
Value Function associated with general input i
Display of active function associated with
input
0 Input functions disabled
1 Water failure from external float (NO) F1
2 Water failure from external float (NC) F1
3 Auxiliary setpoint Pi (NO) related to input used F2
4 Auxiliary setpoint Pi (NC) related to input used F2
5 General enable of the inverter from external signal (NO) F3
6 General enable of the inverter from external signal (NC) F3
7
General enable of the inverter from external signal (NO) + Reset
of resettable blocks
F3
8
General enable of the inverter from external signal (NC) + Reset
of resettable blocks
F3
9 Reset of resettable blocks NO
10 Low pressure signal input NO, automatic and manual reset F4
11 Low pressure signal input NC, automatic and manual reset F4
12 NO low pressure input, manual reset only F4
13 NC low pressure input, manual reset only F4
Table 22: Input configuration