Appendix A
42
H-Max Series Adjustable Frequency Drive
MN04008005E—September 2011
Relay Board 1
Relay Board 2
Notes
Relay board with two change-over contact (SPDT) relays and one relay with normally-open (NO or SPST) contact.
5.5 mm isolation between channels.
If 230 Vac is used as control voltage from the output relays, the control circuitry must be powered with a separate
isolation transformer to limit short circuit current and overvoltage spikes. This is to prevent welding on the relay
contacts. Refer to standard EN60204-1, section 7.2.9.
Relay board with two change-over contact (SPDT) relays and a PTC thermistor input. 5.5 mm isolation between
channels.
Terminal
Signal
Description
21
Relay output 1
Switching capacity
24 Vdc/8A
250 Vac/8A
125 Vdc/0.4A
Minimum switching load
5V/10 mA
22
23
24
Relay output 2
Switching capacity
24 Vdc/8A
250 Vac/8A
125 Vdc/0.4A
Minimum switching load
5V/10 mA
25
26
32
Relay output 3
Switching capacity
24 Vdc/8A
250 Vac/8A
125 Vdc/0.4A
Minimum switching load
5V/10 mA
33
Terminal
Signal
Description
21
Relay output 1
Switching capacity
24 Vdc/8A
250 Vac/8A
125 Vdc/0.4A
Minimum switching load
5V/10 mA
22
23
24
Relay output 2
Switching capacity
24 Vdc/8A
250 Vac/8A
125 Vdc/0.4A
Minimum switching load
5V/10 mA
25
26
28
Thermistor input
Rtrip = 4.7 kohms (PTC), measuring voltage 3.5V
29
Summary of Contents for H-Max Series
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