J&E Hall Fridgewatch 2100, Инструкция по установке, эксплуатации и обслуживанию

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Fridgewatch 2100 Controller Mk4
Section 3 Publication 3-58
Issue 1.1 : 01/08 Page 53 of 152
F
UNCTION
T
ERMINALS
R
EMARKS
P1 (Analogue Input 1) Temperature If used, display as measured point P1.
Pt 100
Ω
4-wire
±
80
°
C
o
o
o
o 101
102
103
104 Temperature transducer input. Can be configured to
be the control variable (set point), the start value or the
stop value or any combination of the above; refer to
Table 2.
P2 (Analogue Input 2) Pressure If used, display as measured point P2.
Signal 0 mV
to 100 mV.
Excitation
10 V dc. +
-
+
-
o
o
o
o 105
106
107
108
Pressure transducer input. Can be configured to be
the control variable (set point), the start value or the
stop value or any combination of the above; refer to
Table 2.
P4 (Analogue Input 3) Slide Valve Position If used, display as measured point P4.
(Passive)
o
o
o
o
151
152
153
154
=
=
=
=
4 to 20 mA in.
4 to 20 mA out.
+24 V regulated LVDT signal supply.
0 V.
Link terminals 152 and 154.
P5 (Analogue Input 4) Motor Current If used, display as measured point P5.
Current
Transformer
Signal From
Soft-Starter
or Inverter
o
o
o
o
155
156
155
156
1 Amp current transformer, sensing current in the line
conductor, with a 1
Ω
(1R0) resistor connected across
the terminals and one terminal earthed. Common
mode voltage between CT and Fridgewatch 2100 must
not exceed 15 V peak to peak
For motor soft-starters or inverters which provide a
4 to 20 mA signal corresponding to motor current, fit a
suitable 50
Ω
(50R) shunt resistor across Fridgewatch
2100 input and set S64 = -1 x motor line current (not
phase current) corresponding to the 20 mA signal.
Motor HT
Thermistor
o
o
109
110 Wire motor HT thermistor to conditioning relay, pre-
wired to terminals 109 and 110.
Thermistor trips, relay contacts open, on fault
condition. Fridgewatch 2100 displays a trip: event
code E1 High Motor Temperature.
Cut-out (Not
Allocated) o
o 111
112
Cut-out contacts open on fault condition. Fridgewatch
2100 displays a trip: event code E24.
Link terminals 111 and 112 if a cut-out is not to be
used.
Discharge HT
Thermistor
o
o
113
114 Wire discharge HT thermistor to conditioning relay, pre-
wired to terminals 113 and 114.
Thermistor trips, relay contacts open, on fault
condition. Fridgewatch 2100 displays a trip: event
code E2 High Discharge Temperature.
Terminal prefix: 1 = compressor 1, the card positioned in the Fridgewatch 2100 enclosure immediately adjacent to the
mounting board; refer to Fig 4. This prefix does not physically appear on the card.
1
If fitted, depends on the application.
2
Relays must be low consumption type, 40 mA maximum, Omron LY2 or similar (RS Components part number 329-799).
3
Diode type 1N4004 MUST be fitted. Connect as illustrated in Fig 11 to ensure correct polarity.
Fig 24 Wiring Connections to 3MIO1 Input/Output Card for Compressor 1
Pt 100
Ω
Link
1
Ω
Line
Conductor
50
Ω
4 to 20 mA
Signal
160
TR
161
162
TR
163