4.
Capability of inverting Set Point commands. For example, in channel No.1, the parameter SP1L (Set Point 1 Low) corresponds to
parameter HC1L (Heating Cooling 1 Low). If we set HC1L to Col, the command is executed over the Set Point. If we set HC1L to
Hot, the command is executed below the Set Point. For example, in High and High-High surveillance, the parameters are set as
follows: HC1H = Col and HC1L = Col.
5.
The screen depicts 4 temperature channels at the same time. It refreshes automatically to the next set of temperatures and the
two average group temperatures. The refreshing time can be set from the parameter Tisc. By pressing [SET] we manually change
the indication.
6.
When an alarm appears, the temperature indication of the channel with the alarm starts flashing on screen, while the corresponding
channel group freezes on screen. Each incoming alarm is recorded and numbered according to the alarm sequence into a table. Up
to 30 alarms are recorded, with the new incoming alarm being placed to the 30
th
position and the 1
st
being lost. By pressing [ ] and
[SET] the alarm table appears on screen. To clean the whole table, we press at the same time [ ] and [SET]. The temperature
indications appear on screen by pressing [SET].
7.
There are up to 32 alarms where each channel has 4, two Set Point alarms (HIGH, LOW) and two average alarms (HIGH, LOW).
When a channel does not belong to any group, the two average alarms are automatically deactivated.
8.
Each alarm is driven to an output (1÷11) by adjusting the proper parameter. The outputs of Set Point alarms are adjusted from
parameters (OS1H/OS1L÷OS8H/OS8L), while the outputs of average alarms are adjusted from parameters
(OA1H/OA1L÷ΟΑ8Η/ΟΑ8L). Alarms can be driven to outputs independently or in groups. If we set “0”, the alarm doesn’t
correspond to any output and if we set from “1÷11”, the alarm corresponds to the selected output.
9.
Each channel has one LED, in a total of 8 LEDs. A LED starts flashing when an alarm appears and remains ON until it is
recognized by [RESET]. If the cause of the alarm remains after the RESET, the LED remains steadily ON and turns off when the
cause disappears.
10.
Each LED can be driven to an output (1÷11) for monitoring. This adjustment is set from parameters (OLE1÷OLE8). If we set “0”,
the LED will not correspond to any output while if we set from “1÷11”, the LED of the respective channel is driven to the selected
output.
11.
General internal relay alarm (250VAC, 10 A resistive loads). When one or more of the 32 alarms appear, the general relay is
activated. If the parameter No.172 OFWC is set to OFF, the OVER FLOW and WRONG CONNECTION alarms do not activate the
general relay.
12.
Internal relay with one associated auxiliary contact 250VAC 10A for setting up an external alarm circuit in case of main power
supply failure.
13.
Detection of cutline or short circuit line in the temperature sensors or 4÷20 mA, 0÷20 mA (sensor failure) in each channel.
Button’s function
Managing the parameters
By pressing [ENTER] we enter the parameter’s menu and
the first parameter is displayed, Code. In order to access
the parameters, we have to set the parameter Code to
“22”.
By pressing [SET] the arrow flashes next to the
parameter’s value and with the arrows [ ], [ ] we can
modify its value.
By pressing [ENTER] we confirm the new value and
the arrow flashes next to the parameter’s name.
By pressing [SET] we cancel the new value and return
to the parameter’s indication while the arrow flashes
next to the parameter’s name.
With the arrows [ ],
[ ] we scroll into the parameters
with the order they appear in the parameter’s table.
By pressing [ENTER] we exit parameters menu.
2
button function
ΕΝΤΕR
- access parameters menu
- confirm the new value of a parameter
SET
1. cancel the new value of a parameter
2. while programming parameters:
By pressing once, an arrow starts flashing next to the parameter
value and its value can be modified with the arrows
By pressing again, the arrow starts flashing next to the parameter
name and we can scroll into the parameters with the arrows
3. when not programming parameters:
- displays the next group of temperatures/mA
- when the alarms appear on screen, by pressing SET we change
the indication to the set of temperatures/mA
- inside parameters menu, we can scroll through the parameters
or change their values
- outside parameters menu, functions as TEST LAMP
- inside parameters menu, we can scroll through the parameters
or change their values
- outside parameters menu, functions as alarm RESET
clears the alarms table (does not reset alarms)
the alarm table appears on screen