E-PAK 150 DX/300 DX/500 DX
31
EN
The start and control unit has the following components:
1.
Transformer (TR1).
The transformer is a multi-transformer with terminals for several different
supply voltages, marked on the upper side of the transformer.
NOTE!
Ensure that the connection matches the actual supply voltage. The
secondary voltage is always 24 V AC.
2.
Reset relay (K5).
3.
Transformer, primary fuses F2 and F3, both 6 A.
4.
Timer for Y/D switching (K4T).
5.
Y-contactor (K3).
6.
D-contactor (K2).
7.
Main contactor (K1).
8.
Motor overload relay with manual reset button (S1F).
9.
Grounding cables.
10.
Emergency switch for 3-phase supply.
11.
Terminals 1 and 2 for 24 V AC accessory supply. Fuse F5 on terminal 1,
1 A, fast.
12.
Terminals 3 and 4 for the Pilot Signal (PS) cable. Fuse F6 on terminal 3,
1 A, fast.
NOTE!
Use a jumper on terminals 3–4 if a PS cable is
NOT
used.
13.
Other terminals required by some accessories, all 24 V AC.
14.
Transformer secondary fuse F4, 4 A, slow.
15.
Filter Cleaning Relay (FCR). Normal settings: T
on
=4 s. T
off
=1 h.
16.
Start/Stop Relay (SSR) for automatic start and stop by means of a PS
cable. Normal setting=10 minutes.
17.
Duty/Idle Relay (DIR) for automatic switching to idling mode. Normal
setting =30 seconds.
For details about fuses and settings for the overload relay, see
Section 5.3 Technical and electrical data.
6.2
Accessories
The installation of Nederman accessories for E-PAK 150 DX/300 DX/500 DX
is described in the manuals for each product. Consult your local Nederman
representative for available accessories.
The E-PAK 150 DX/300 DX/500 DX start and control unit is prepared for
the connection of external accessories or signals. The signals/accessories
are connected according to the electric circuit diagram, see Figure 21
(E-PAK 150 DX) and Figure 22 (E-PAK 300 DX/500 DX). See also
‘Table 6-1: Accessory terminals’.
The most common accessory is a PS cable which allows remote start/stop
signalling from the valves of the duct system.
Summary of Contents for E-PAK 150 DX
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