SystemAir PCA 1000D, Operating Instructions Manual, Page: 9 / 20

5.2 EMC-compatible installation of control lines
Pay attention to maintain suf fi cient distance from powerlines and
motor wires to prevent interferences. The control cable may not be
longer than 30 m. Screened control cables must be used when the
cable length is longer than 20 m!
5.3 Connection Voltage supply
Connection Voltage supply at terminals: “ +Ub ” and “ GND ” . Here, it
must be strictly observed that the mains voltage lies within the
allowable tolerance speci
fi cations ( Technical data and name-
plate af fi xed to the side).
5.4 Output voltage 0 - 10 V
Connection to Terminals “ A ” - “ GND ” (I
max
Technical data).
It is not permissible to connect outputs of several devices to each
other!
5.5 Input for switch over Setpoint 1/ 2
Via voltage at terminals “ 1 ” and “ 2 ” (10... 24 V DC) a switchover
between Setpoint 1 and Setpoint 2 is possible (note polarity
connection diagram).
•
Voltage OFF => Setting “ Setpoint 1 ” active
•
Voltage ON => Setting “ Setpoint 2 ” active
Setpoint 1active Setpoint 2 active
100 Pa
(0.401 in.wg)
Δ
p
The active Setpoint is indicated in the
menu INFO, an active
“ Setpoint 2 ” is
signalized by the moon symbol.
80 Pa
(0.321 in.wg)
Δ
p
Operating Instructions PCA 1000D Electrical installation
L-BAL-E120-GB 1419 Index 002 Part.-No.
9/20