10
1.7.
Press the SET button and wait for the Limit Hi LED to turn from Green then red and back to
green to set the high pressure limit.
1.8.
Position the SETUP switch to the OPERATE/PULSE or OPERATE/ANALOG to operate the actuator
normally.
1.9.
When in the OPERATE/PULSE mode, the actuator will respond to external pulse control inputs
and will stop when the pressure regulator reaches either pressure limit. The LIMIT LO and LIMIT
HI LEDs will change from Green to Red when the limit is reached. The internal UP and DN push
buttons will respond likewise.
1.10.
When in the TRAVEL LIMIT/LO or HI, mode, the external pulse control inputs are disabled. The
internal UP and DN push buttons will be active and will ignore the previous pressure limits so
that new limits may be set beyond the previously set limits. The LIMIT LO and LIMIT HI LEDs
will continue to operate from the previously set limits until new limits are set.
2.
Setting Analog Control Current
2.1.
Turn on power to the unit.
2.2.
Set SW1 to 4-20 mA.
2.3.
Position the SETUP SWITCH to the TRAVEL LIMIT LO setting.
2.4.
Using the UP and DN buttons under the cover, adjust the output pressure to the lowest desired
pressure.
2.5.
Apply the desired control current to the mA input terminals for this pressure setting.
2.6.
Press the SET button and wait for the Limit Lo LED to turn from Green then Red and back to
Green to set the low travel limit and corresponding control current.
2.7.
Move the SETUP SWITCH to the TRAVEL LIMIT HI setting.
2.8.
Using the UP and DN buttons under the cover, adjust the output pressure to the highest
desired pressure.
2.9.
Apply the desired control current to the mA input terminals for this pressure setting.
2.10.
Press the SET button and wait for the Limit Lo LED to turn from Green then Red and back to
Green to set the high travel limit and corresponding control current.
2.11.
Position the SETUP switch to the OPERATE/ANALOG to operate the actuator from the mA
input terminals.
2.12.
ERROR SIGNALS
–
If both the Hi Limit and Lo Limit LED’s blink red, then an error has occurred
in setting the Analog Control signal. The most common error is setting the Lo and Hi Limit and
forgetting to change the control current. In this case, the Lo Limit and Hi Limit are set with the
same current. This signal also occurs if the difference in control current between the Lo Limit
and Hi Limit is less than 4mA. Correcting either the Lo Limit or Hi Limit setting or both will
resolve the problem.
3.
Setting Analog Control Voltage
3.1.
Turn on power to the unit.
3.2.
Set SW1 to 1-5 V.
3.3.
Position the Position the SETUP SWITCH to the TRAVEL LIMIT LO setting.
3.4.
Using the UP and DN buttons under the cover, adjust the output pressure to the lowest desired
pressure.
3.5.
Apply the desired control voltage to the V input terminals for this pressure setting.
3.6.
Press the SET button and wait for the Limit Lo LED to turn from Green then Red and back to
Green to set the low travel limit and corresponding control current.
3.7.
Move the SETUP SWITCH to the TRAVEL LIMIT HI setting.
