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38
Technical Features
General Specifications
33
Electrical diagrams
36
40
40
Alarm outputs
(optional)
Number of outputs:
up to 2, independent
Alarm type:
up or down alarm, phase asymmetry
Control on the variables:
All variables listed in the paragraph
“retransmitted variables” on page 24 can be controlled.
Alarm set-point:
can be modified from 0 to 100% of the dis-
played electrical scale.
Hysteresis:
From 0 to 100% of the displayed scale
On-time delay:
from 0 to 255 sec
Relay status:
selectable, normally disabled or normally
enabled.
Output type:
Relay, SPDT AC 1-8A, 250VAC; DC 12-5A,
24VDC; AC 15-2.5A, 250VAC; DC 13-2.5A, 24VDC
Min. response time:
≤
150 ms, filters excluded, FFT exclud-
ed, on-time delay: ”0”
Insulation:
4000 V
RMS
between output and measuring input,
4000 V
RMS
between output and power supply input.
Notes: Outputs can be open collector type or relay type (for
the open collector type refer to the technical features
described in the pulse outputs).
Digital inputs
AQ 1038:
N. of inputs: 3 (free-of-voltage)
Reading voltage:
24VDC/1mA
AQ1042:
N. of inputs: 3 + power supply inputs
Power supply inputs:
output voltage:
16V<+Aux<24VDC;
output current:
Max 15mA.
Input frequency:
Max 20Hz, duty cycle 50%
Close contact resistance:
Max 1k
Ω
Open contact resistance:
Min 100k
Ω
Insulation:
4000VRMS
Use of contact 1: lock of the programming from key-pad
(when the contact is closed).
