ABB ACS 502 Series Installation & Start-Up Manual page 50

Chapter 3 – ACS 502 Installation Instructions
Two-Wire Start
(Dry Contact)
115 VAC Start
Freeze/Fire/Smoke
Protection
115 VAC Auxiliary Power
3-12
DC coils should be supressed with a diode, although this is not required
because of the small amount of noise generated by these type of circuits. If a
diode is used, it should have a voltage rating greater than or equal to the
supply voltage, and be connected as shown below:
X50
Figure 3-9 shows connections TB1:32 through TB1:40.
Note: The 115 VAC control transformer must be supplied for these terminals
to be active.
Figure 3-9 TB1:32 Through TB1:40
RUN
To start the ACS 502 by dry contact (maintained), connect contact to TB1:32
and TB1:34. This will start the drive in Auto when HOA is supplied, and will
start and stop the motor in Bypass when Bypass is supplied.
To start the ACS 502 by applying 115 VAC, connect the 115 VAC signal to
TB1:35 and TB1:36. Operation is the same as Two-Wire Start.
Safety interlocks, such as Freeze, Fire, and Smoke protection are normally
closed dry contacts connected in series between TB1:38, TB1:39, and
TB1:40. Remove the jumper wire before making your connection. When the
contact opens, the motor will stop, whether in NORMAL or BYPASS. When
the External Fault indicator is provided (supplied with Bypass Option), the
indicator will illuminate when any of these contacts open.
115 VAC is available for customer use. There is approximately 100 VA
available. TB1:46 through TB1:50 are ground, and TB1:51 through TB1:55
are hot.
Figure 3-10 shows connections TB1:46 through TB1:55.
Figure 3-10 TB1:46 Through TB1:55
diode (24 VDC in this case)
+
24 VDC
-
115V
START
115 VAC
ACS 502 Installation & Start-up Manual