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PRESYS
⏐ Instruments
4.2 - Hardware Configuration
The software configuration level of input (level 2 - Input) must be complemented
by hardware configuration, through internal jumpers.
There is one selection plug-in jumper associated to each input: J1 for input 1 and
J2 for input 2. When the jumper is plugged, the instrument is configured to receive
amplitude pulses from 3.5 V
This resource is useful to eliminate unstable indications due to the plant electrical
noise. The factory sets up each selection jumper to be plugged in only one pin (false
position), so that the instrument input operates within the 300 mV
case one notices an unstable indication, for instance, when viewing the 0 Hz indication
with an opened sensor or a stopped axis, plug the jumper corresponding to this channel.
Jumpers JS1 and JS2 are used when the inputs are connected to sensors with
contact closure or to a NAMUR sensor. Otherwise, for input signals generated by other
frequency sensors, such as magnetic pickups, keep JS1 and JS2 placed on false
positions as shown below.
(*) The instrument is provided with jumpers J1, J2, JS1 and JS2 placed in false positions.
4.3 - Snubber Use for Relay
Relay modules are provided with circuits for eliminating electrical arch (RC
snubber). The snubbers are put in parallel with the relay contacts, by placing the jumpers
J1 and J2 localized on the back of the relay board. When the jumpers are not placed, the
relay contacts are kept without snubbers. The relay module is sent from factory with the
jumpers placed.
Maintenance
Page 26
to 30 V
p-p
p-p
Fig. 17 - Position of the Selection Plug-in Jumpers
DMY-2030-F / DMY-2030-F Light
.
to 30 V
range. In
p-p
p-p
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