Note. OVLD stays high if the overload subsequently results in a stall trip condition.
The stall timer will allow 150% motor current for approximately 30 seconds before tripping. The overload
integrator can tolerate 50% overload x 30 secs = 1500 units. (A 50% overload is 150% full motor current. i.e
1.5 times motor current set on Imax).
Stall timer Operation
Minimum available overload time prior to trip = 1500 / Overload % in seconds
Overload time examples 125% Imax current for 60 secs (1500 / 25 =60)
112.5% Imax current for 120 secs. (1500 / 12.5 =120)
Note. The stall timer is actuated by current demand exceeding 110% when the desired speed remains
unsatisfied. E.g. Excess load, insufficient supply volts, loss of feedback, saturated feedback, insufficient
torque, jammed shaft. This allows the protection to be more comprehensive than overcurrent alone.
15 TRIP. This output goes high (+10.5V) and latches high when the stall timer has timed out (in which case T14
OVLD will also be high) OR if the fan alarm has operated (in which case T14 OVLD will be low). Flywheel
diode to COM. See T12 RLOP for details of the output drive capability and configuration.
WARNING. TRIP is an electronic armature current inhibit function. The field output remains energised, and
all power terminals ‘live’. TRIP must not be relied on to ensure the machine is stationary during hazardous
operations. The motor FIELD output remains energised with TRIP active please beware of overheating the
motor when stopped. (Does not apply to permanent magnet motors).
16 ROP. Ramp output. 0 to +/-10V output for 0 to +/-10V input. 1K Ohm output impedance.
17 DEM. Demand output. 0 to -/+10V output for 0 to +/-100% speed demand. 1K Ohm output impedance.
Represents the inverted total speed demand.
18 SOP. Speed output. 0 to +/-5V output for 0 to +/-100% speed feedback. 1K Ohm output impedance. NOTE:
Prior to LA issue 11 (2011) (see side of terminal block), the output at this terminal was 0 to +/-10V.
19 IOP. Current output. 0 to +5V output for 0 to +100% armature current.
Maximum output +7.5V for +150% current. 1K Ohm output impedance.
20 SPD. Auxiliary speed input. Added to main input. Input impedance 100K Ohm.
0 to +/-10V input for 0 to +/-100% speed demand, direct input fast response.
21 TRQ. Torque input. 100K Ohms pull up to +12V.
0 to +5V input for 0 to +/-100% current demand. This input acts as a clamp on the current demand
produced by the speed loop. Also if the speed loop current demand falls below the input clamp level then
the speed loop has priority. For the clamp to operate, the speed loop current demand must be arranged to
exceed the clamp level by ensuring the speed demand is high enough.
A+ Motor armature + Form Factor typically 1.5. (Load dependant)
A- Motor armature -
F- Motor Field –(No connection required for permanent magnet motors).
F+ Motor Field +(For half wave field volts 0.45 X AC, connect field to F- and N).
N AC supply. 110V AC or 240V AC +/-10%, 50–60 Hz. (30/60VAC for type LV60)
L AC supply. 110V AC or 240V AC +/-10%, 50–60 Hz. (30/60VAC for type LV60)
Terminal tightening torques A+ A- F- F+ N L 4.4in lb - 0.50Nm
Terminals 1 to 21 2.2in lb - 0.25Nm
Models 680XRi and 1220XRi use an internal fan for cooling. The Alarm
lamp will come ON and the drive will electronically shut down if the
internal fan fails. (T15 TRIP alarm output available).
WARNING. This alarm is an electronic armature current inhibit function. The field output remains energised,
and all power terminals ‘live’ hence it must not be relied on to ensure the machine is stationary during
hazardous operations. Also the motor FIELD output remains energised, please beware of overheating the
motor when stopped. (Does not apply to permanent magnet motors).
For frequent stopping or jogging it is recommended to use T9 RUN
input. When using a mains contactor connect a spare Normally Open
contact from the contactor in series with T9 RUN input. This opens T9
RUN when the contactor drops out.
