E-Clipse Bypass Control Unit Connections (Rbcu); Technical Data (Continued); (Supplement To Ach550-Uh User's Manual) - ABB ACH550 series User Manual

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E-Clipse Bypass Control Unit Connections (RBCU)

(Supplement to ACH550-UH User's Manual)

Control cable requirements for connections to the E-Clipse Bypass (RBCU) (X2) are
the same as those described for the ACH550 control panel (X1). Refer to the
ACH550 User's Manual.
Bypass Control Unit Connection Specifications
Digital Inputs
Relays
(Digital Outputs)
WARNING! Relay coils generate noise
spikes in response to steps in applied
power. To avoid drive damage from such
spikes, all AC relay coils mounted across
control panel inputs require R-C snubbers,
and all DC relay coils mounted across
control panel outputs require diodes – see
figure.
Bypass Control Unit Terminals
The following table provides specifications for the E-Clipse Bypass's control unit
terminals
Frame Size
Control Connection Specifications
Digital input impedance 1.5 k. Maximum voltage for digital inputs is 30 V AC/DC
• 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 . = 1), 1 A rms (cos . = 0.4)
• 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
Maximum Wire Size
2
mm
All 0.12...2.5
E-Clipse Bypass Configurations for ACH550 Drives
Control
Torque
AWG Nm
26...14 0.4
0.47 uF
AC Coil
33 Ohm
Typical R-C
Snubber
+
DC Coil
Diode
-
lb-ft
0.3
Technical Data
Control
Panel
Inputs
Control
Panel
Outputs