Control Connections; Control Connection Specifications; Control Cables - Daikin MD5 Operation Manual

Control connections

Control Connection Specifications

Table 61: Control Connection Specifications
Analog
See Table 60: Drive Control Terminal Descriptions on page
Inputs and
86 .
Outputs
Digital Digital input impedance 1.5 kΩ. Maximum voltage for digital
Inputs inputs is 30 V .
• Max . contact voltage: 30 V DC, 250 V AC
• Max . contact current / power: 6 A, 30 V DC; 1500 VA, 250 V
AC
• Max . continuous current: 2 A rms (cos ϕ = 1),
Relays
1 A rms (cos ϕ = 0 .4)
(Digital
Outputs)
• Minimum load: 500 mW (12 V, 10 mA)
• Contact material: Silver-nickel (AgN)|
• Isolation between relay digital outputs, test voltage: 2 .5 kV
rms, 1 minute
OM 1191 • MD5 VFD

Control Cables

General Recommendations
Use multi-core cables with a braided copper wire screen,
temperature rated at 60 °C (140 °F) or above:
At the drive end, twist the screen together into a bundle not
longer than five times its width and connected to terminal X1-1
(for digital and analog I/O cables) or to either X1-28 or X1-32
(for RS485 cables) .
Route control cables to minimize radiation to the cable:
• Route as far away as possible from the input power and
motor cables (recommend at least 20 cm [8 in] where
practical) .
• Where control cables must cross power cables make sure
they are at an angle as near 90° as possible .
• Stay at least 20 cm (8 in) from the sides of the drive
where practical .
Use care in mixing signal types on the same cable:
• Do not mix analog and digital input signals on the same
cable .
• Run relay-controlled signals as twisted pairs (especially
if voltage > 48 V) . Relaycontrolled signals using less
than 48 V can be run in the same cables as digital input
signals .
NOTE: Never mix 24 VDC and 115/230 VAC signals in the
same cable .
Triacs used as sources for drive inputs, may have
excessive leakage current in the OFF state, enough
to read as ON to drive inputs . Driving two or more
inputs, divides the leakage current, reducing or
eliminating the problem . An alternative is to add a
small capacitive load – see figure.
84
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