DFE SteadyWeb, Инструкция по эксплуатации

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5.17 SAMPLE AND HOLD (See Page 5 for description, Figure 16 for switches)
The output of the controller is measured and then locked at the measured value upon the closure of
an external contact. The output remains locked only as long as the contact is closed. The status light
on the front panel will light when the output is locked. Connect the contact as shown below.
Figure 23 - SAMPLE & HOLD CONTACT
5.18 SOFT START (See Page 5 for description, Figure 16 for switches and adjustments)
Soft start is normally used only in UNWIND zone applications. It can be actuated in one of three
ways; 1. by sensing a loss of tension, 2. by closure of an external contact, 3. by sensing machine
speed. The status light on the front panel will light when Soft Start is activated.
1. Actuation by low tension . This is the standard configuration.
a) Turn off soft start when the controller is being used to control rewind or intermediate tension
because it serves no purpose and it may not be possible to leave soft start. No external
electrical connections are needed for actuation. Set SW104 switches as follows:
SW104 SWITCHES
SS ON SS OFF
1 - Open 1 - Closed
2 - Open 2 - Open
3 - NA 3 - NA
4 - NA 4 - NA
NA = Not Applicable
If Soft Start is set ON, proceed to Step b, otherwise quit here.
b) Set the SS OUTPUT pot. (RT107) for the output you want while in Soft Start. The range is about
0 to 100% of maximum output. Turn the pot. CW to increase output. Avoid setting the output
higher than the operating tension. It is best to set it low, but high enough to produce enough
tension to exceed the trip point tension or the controller may not be able to get out of Soft Start.