User manual

▲
▲
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 1kΩ
Open contact resistance: Min 100kΩ
Insulation: 4000VRMS
Use of contact 1: lock of the programming from key-pad
(when the contact is closed).