Siemens SED2 VFD Electronic Bypass Option 125-3208 - Manual (Page 54)

SED2 VFD Electronic Bypass Option Operating Instructions
46 Siemens Building Technologies, Inc.
Wiring Example for Interlock
Customer
Proof
Power to
Customer
Device
Programmable Output, NO
COM
NC
DIGITAL OUTPUTS
DIGITAL INPUTS
J2
J1
13
14
15
16
17
18
19
20
21
22
23
24
25
26
1
2
3
4
5
6
7
8
9
10
11
12
Remote Start Input
Remote Safety #1
Remote Safety #2
Interlock Start
VFD0115R2
Essential Services
Description
The Essential Services feature allows full-power bypass mode control of the motor
during an emergency scenario. Activation of Essential Services overrides any other
selected operation. Essential Services ensures that the bypass contactor will not
open when a safety input or overload opens. Power goes directly to the motor.
NOTES:
1. If using both the Interlock and Essential Services features, Essential Services
waits 10 seconds for the Interlock to confirm the safety condition (such as
opening a damper). After the 10-second delay, Essential Services controls the
motor regardless of the Interlock safety condition status.
2. Use extreme care when using the Essential Services mode. All safety circuits are
no longer active (including motor overload and safety inputs to the Controller
board).