15
• Technical Specifications
Terminal Function
Description
Terminal 15
Programmable Fault Output
relay (Common)
When the
At Fault Close
function is selected, the relay
is energized upon fault. The contact returns to its original
position when one of the following occurs:
•
The fault has been removed and ASTAT-XT was reset.
•
Disconnection of Control Supply
When the
At Fault Open
function is selected, the relay is
energized immediately when the Control Supply is connected
and de-energizes when one of the following occurs:
•
Fault
•
Control Supply disconnection
Refer to section
PROG. Fault Relay
programming.
Terminal 16
Programmable EOR (End Of
Ramp) Output relay (N.O.)
Voltage free 8A, 250VAC, 2000VA max. changes its position at
the end of ramp, after an adjustable time delay (Contact
Delay), 0 – 120 sec.
Terminal 17
Programmable EOR (End Of
Ramp) Output relay (N.C.)
The contact returns to its original position when
Energy
Save
is operated, on Soft Stop or Stop signals, on Fault
condition, or upon voltage outage.
Terminal 18
Programmable EOR (End Of
Ramp) Output relay (Common)
The EOR (End Of Ramp) contact can be used for:
•
Closing a bypass contactor
•
Activating a valve after compressor has reached full speed
•
Loading a conveyor after motor reached full speed.
Refer to section
EOR Relay Delay
programming
Terminal 19
External Fault input
Input from a N.O. contact that is connected between
terminals 19 and 21. The ASTAT-XT will trip 2 seconds after
the contact closes.
Notes:
•
Wires connecting the External Fault contact to terminal 19
should not exceed 1 meter in length.
•
External Fault can be used only when terminal 21 is
connected to neutral or ground.
•
Only potential free contacts may be connected to terminal
19.
•
Do not connect any voltage to terminal 19.
•
Any connection of voltage to this terminal may disrupt
ASTAT-XT operation, and cause ASTAT-XT or motor damage.
•
Refer to section
8.12 page 67 for the External Fault wiring
diagram.
Terminal 21
Neutral connection
When a
mains
neutral wire is available, connect terminal 21
to neutral. Terminal 21 serves only as a voltage reference to
the control circuitry.
Caution:
•
ASTAT-XT circuitry incorporates an internal artificial neutral,
which should only be used, when the
mains
system is not
grounded and
mains
neutral connection is not available.
•
Only potential free contacts may be connected to terminal
21.
•
Do not connect any voltage to terminal 21.
Any connection of voltage to this terminal may disrupt
ASTAT-XT operation, and cause ASTAT-XT or motor damage.
•
Refer to section
8.1 on page 62 for terminal 21 connection.
