100/180 mm PAPERLESS GRAPHIC RECORDER: USER GUIDE
HA028910
Issue 13 Sep 16
User Guide
Page 386
TECHNICAL SPECIFICATION (Relay output board)
General
Maximum number of relay boards
Small-frame unit
Four
Large-frame unit
Nine
Number of relays per board
Changeover relays:
Three
Normally open relays:
Four
Normally closed relays:
Four
Estimated mechanical life
30,000,000 operations
Update rate
See ‘
Update rates
’ in ‘Recorder specifi cation’ above
AC load ratings
Derating
The fi gures given below are for resistive loads. For reactive or inductive loads, de-rate in accordance with graph 1, in which
F1 =
Actually measured results on representative samples
F2 =
Typical values (according to experience)
Contact life =
Resistive contact life x reduction factor.
Maximum switching power
500VA
Maximum contact voltage
250V providing this does not cause the maximum switching power (above) to be exceeded
Maximum contact current
2 Amps providing this does not cause the maximum switching power (above) to be exceeded
DC load ratings
Maximum switching power
See graph 2 for operating volt/Amp envelope
Maximum contact voltage/current
See graph 2 for examples.
Safety isolation
Isolation (dc to 65 Hz; BS EN61010)
Installation category II; Pollution degree 2
Relay to relay:
300V RMS or dc (double insulation)
Relay to ground:
300V RMS or dc (basic insulation)
F1
F2
1
0.8
0.6
0.4
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
F
Reduction
Factor
F
Power factor (cos
φ
)
Graph 1 Derating curves for ac loads
Graph 2 DC load switching curves
10
20
30
40
50
100
200
300
0.1 0.2
0.5
5
20
Max. DC load breaking capacity
1
2
inductive load
(L/R = 20msec)
resistive load
DC Voltage (Volts)
DC current (Amps)
