ECKELMANN VS 3015 C, Инструкция по эксплуатации

Страница: 96 / 185

14.01.2019 96/185
6.5.1 Procedure for the start-up of a system
The following signals from the pack controller are available for the correct control of the FC / speed controller:
1. Enable FC / speed controller
In the case of compressor combined control, the frequency converter is enabled via the relay output for
compressor 1 (terminals 13/14). In the case of speed controlled condenser fans, the enable for the FC / speed
controller is issued via the relay output for fan 1 (terminals 15/18).
2. Speed controller / external alarm fault signal input
A. Speed controlled compressor or condenser control:
The error message output of the FC / speed controller is monitored via digital input 15 (terminals 78/79) of the
pack controller during compressor combined control or fan speed control. The message text for the
speed
controller / external alarm input is automatically set to Speed controller when continuous control is configured.
If the compressor control is configured as combined control and the fan control as speed control, the speed
controller / external alarm input (input 15) monitors the fault signal output of the frequency converter for the
compressor control and must be wired accordingly. The fault signal output of the FC / speed controller for the
fans cannot then be monitored using the controller.
1. All inputs and outputs of low voltage signals of the controller must be contacted using shielded
cables. Correct design of this shielding is particularly important for systems with FCs / speed
controllers. In the case of inadequate shielding, high impairments of the measured values can
occur due to the high interference emission of FCs / speed controllers.
2. Care must be taken with all analogue inputs and outputs that there is no connection between the
sensor cables and the signal ground or shielding.
3. Analogue inputs and outputs are sensitive to external supply and reverse polarity! When
connecting the pack controller to the control input of the FC /speed controller, the correct polarity
must be strictly ensured. FCs / speed controllers also frequently provide a power supply for
sensors or potentiometers, using which the speed can be specified.
This supply must
never be connected to any analogue output of the controller. In the event of a
faulty connection between the controller and the FC / speed controller, components in the
controller can be permanently damaged.

The FC / speed controller must be configured here so that the enable is issued in the case of closed
contact.

This fault signal is active when there is no voltage at the FC / speed controller input, i.e. the FC / speed
controller must be configured and connected so that 230 V AC is present at the input 15 of the pack
controller in the good state.
